97139188 has 12 divisors (see below), whose sum is σ = 170165380. Its totient is φ = 48520512.

The previous prime is 97139179. The next prime is 97139233. The reversal of 97139188 is 88193179.

It can be written as a sum of positive squares in 2 ways, for example, as 94711824 + 2427364 = 9732^2 + 1558^2 .

It is a congruent number.

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, 7623 + ... + 15886.

Almost surely, 2^97139188 is an apocalyptic number.

It is an amenable number.

97139188 is a deficient number, since it is larger than the sum of its proper divisors (73026192).

97139188 is a wasteful number, since it uses less digits than its factorization.

97139188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24546 (or 24544 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The square root of 97139188 is about 9855.9214688430. The cubic root of 97139188 is about 459.6897529938.

The spelling of 97139188 in words is "ninety-seven million, one hundred thirty-nine thousand, one hundred eighty-eight".