169739479 has 24 divisors (see below), whose sum is σ = 215396160. Its totient is φ = 132560064.

The previous prime is 169739429. The next prime is 169739491. The reversal of 169739479 is 974937961.

It is not a de Polignac number, because 169739479 - 2⁷ = 169739351 is a prime.

It is a super-2 number, since 2×169739479² = 57622981462382882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169739429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48637 + ... + 52009.

It is an arithmetic number, because the mean of its divisors is an integer number (8974840).

Almost surely, 2^169739479 is an apocalyptic number.

169739479 is a deficient number, since it is larger than the sum of its proper divisors (45656681).

169739479 is a wasteful number, since it uses less digits than its factorization.

169739479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3472 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 55.

The square root of 169739479 is about 13028.4104556158. The cubic root of 169739479 is about 553.6827011345.

The spelling of 169739479 in words is "one hundred sixty-nine million, seven hundred thirty-nine thousand, four hundred seventy-nine".