79290390 has 16 divisors (see below), whose sum is σ = 190297008. Its totient is φ = 21144096.

The previous prime is 79290373. The next prime is 79290391. The reversal of 79290390 is 9309297.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79290391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321477 + ... + 1321536.

It is an arithmetic number, because the mean of its divisors is an integer number (11893563).

Almost surely, 2^79290390 is an apocalyptic number.

79290390 is an abundant number, since it is smaller than the sum of its proper divisors (111006618).

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

79290390 is a wasteful number, since it uses less digits than its factorization.

79290390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643023.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 79290390 is about 8904.5151468230. The cubic root of 79290390 is about 429.6091454659.

The spelling of 79290390 in words is "seventy-nine million, two hundred ninety thousand, three hundred ninety".