97390290 has 32 divisors (see below), whose sum is σ = 240056640. Its totient is φ = 25268544.

The previous prime is 97390289. The next prime is 97390369. The reversal of 97390290 is 9209379.

It is a Curzon number.

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, 42760 + ... + 44979.

It is an arithmetic number, because the mean of its divisors is an integer number (7501770).

Almost surely, 2^97390290 is an apocalyptic number.

97390290 is an abundant number, since it is smaller than the sum of its proper divisors (142666350).

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

97390290 is a wasteful number, since it uses less digits than its factorization.

97390290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87786.

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

The square root of 97390290 is about 9868.6518836161. The cubic root of 97390290 is about 460.0855071039.

The spelling of 97390290 in words is "ninety-seven million, three hundred ninety thousand, two hundred ninety".