79894620 has 192 divisors, whose sum is σ = 282240000. Its totient is φ = 18600192.

The previous prime is 79894603. The next prime is 79894621. The reversal of 79894620 is 2649897.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79894621) 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 63 ways as a sum of consecutive naturals, for example, 133081 + ... + 133679.

It is an arithmetic number, because the mean of its divisors is an integer number (1470000).

Almost surely, 2^79894620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79894620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141120000).

79894620 is an abundant number, since it is smaller than the sum of its proper divisors (202345380).

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

79894620 is a wasteful number, since it uses less digits than its factorization.

79894620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 79894620 is about 8938.3790476797. The cubic root of 79894620 is about 430.6976596000.

The spelling of 79894620 in words is "seventy-nine million, eight hundred ninety-four thousand, six hundred twenty".