97815338 has 4 divisors (see below), whose sum is σ = 146723010. Its totient is φ = 48907668.

The previous prime is 97815337. The next prime is 97815349. The reversal of 97815338 is 83351879.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96963409 + 851929 = 9847^2 + 923^2 .

It is not an unprimeable number, because it can be changed into a prime (97815337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24453833 + ... + 24453836.

Almost surely, 2^97815338 is an apocalyptic number.

97815338 is a deficient number, since it is larger than the sum of its proper divisors (48907672).

97815338 is a wasteful number, since it uses less digits than its factorization.

97815338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48907671.

The product of its digits is 181440, while the sum is 44.

The square root of 97815338 is about 9890.1636993530. The cubic root of 97815338 is about 460.7538646835.

The spelling of 97815338 in words is "ninety-seven million, eight hundred fifteen thousand, three hundred thirty-eight".