97939690 has 8 divisors (see below), whose sum is σ = 176291460. Its totient is φ = 39175872.

The previous prime is 97939679. The next prime is 97939717. The reversal of 97939690 is 9693979.

It can be written as a sum of positive squares in 2 ways, for example, as 94070601 + 3869089 = 9699^2 + 1967^2 .

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

It is a super-2 number, since 2×97939690² = 19184365754592200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4896975 + ... + 4896994.

Almost surely, 2^97939690 is an apocalyptic number.

97939690 is a deficient number, since it is larger than the sum of its proper divisors (78351770).

97939690 is a wasteful number, since it uses less digits than its factorization.

97939690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9793976.

The product of its (nonzero) digits is 826686, while the sum is 52.

The square root of 97939690 is about 9896.4483528183. The cubic root of 97939690 is about 460.9490331271.

The spelling of 97939690 in words is "ninety-seven million, nine hundred thirty-nine thousand, six hundred ninety".