79645290 has 32 divisors (see below), whose sum is σ = 191721600. Its totient is φ = 21175104.

The previous prime is 79645277. The next prime is 79645303. The reversal of 79645290 is 9254697.

It is an interprime number because it is at equal distance from previous prime (79645277) and next prime (79645303).

It is a super-4 number, since 4×79645290⁴ (a number of 33 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6667 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (5991300).

Almost surely, 2^79645290 is an apocalyptic number.

79645290 is an abundant number, since it is smaller than the sum of its proper divisors (112076310).

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

79645290 is a wasteful number, since it uses less digits than its factorization.

79645290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 79645290 is about 8924.4209896217. The cubic root of 79645290 is about 430.2491615277.

The spelling of 79645290 in words is "seventy-nine million, six hundred forty-five thousand, two hundred ninety".