169979472 has 280 divisors, whose sum is σ = 569234400. Its totient is φ = 48708864.

The previous prime is 169979461. The next prime is 169979477. The reversal of 169979472 is 274979961.

169979472 is a `hidden beast` number, since 16 + 99 + 79 + 472 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169979477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2880979 + ... + 2881037.

It is an arithmetic number, because the mean of its divisors is an integer number (2032980).

Almost surely, 2^169979472 is an apocalyptic number.

169979472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169979472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284617200).

169979472 is an abundant number, since it is smaller than the sum of its proper divisors (399254928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169979472 is a wasteful number, since it uses less digits than its factorization.

169979472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 96 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 169979472 is about 13037.6175737747. The cubic root of 169979472 is about 553.9435271103.

The spelling of 169979472 in words is "one hundred sixty-nine million, nine hundred seventy-nine thousand, four hundred seventy-two".