79020290 has 8 divisors (see below), whose sum is σ = 142236540. Its totient is φ = 31608112.

The previous prime is 79020239. The next prime is 79020299. The reversal of 79020290 is 9202097.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72369049 + 6651241 = 8507^2 + 2579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79020299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3951005 + ... + 3951024.

Almost surely, 2^79020290 is an apocalyptic number.

79020290 is a deficient number, since it is larger than the sum of its proper divisors (63216250).

79020290 is a wasteful number, since it uses less digits than its factorization.

79020290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7902036.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 79020290 is about 8889.3357457124. The cubic root of 79020290 is about 429.1207742216.

The spelling of 79020290 in words is "seventy-nine million, twenty thousand, two hundred ninety".