97709290 has 32 divisors (see below), whose sum is σ = 209744640. Its totient is φ = 32043264.

The previous prime is 97709281. The next prime is 97709291. The reversal of 97709290 is 9290779.

It is not an unprimeable number, because it can be changed into a prime (97709291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28735 + ... + 31954.

It is an arithmetic number, because the mean of its divisors is an integer number (6554520).

Almost surely, 2^97709290 is an apocalyptic number.

97709290 is an abundant number, since it is smaller than the sum of its proper divisors (112035350).

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

97709290 is a wasteful number, since it uses less digits than its factorization.

97709290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60726.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 97709290 is about 9884.8009590482. The cubic root of 97709290 is about 460.5872933473.

The spelling of 97709290 in words is "ninety-seven million, seven hundred nine thousand, two hundred ninety".