97871902 has 4 divisors (see below), whose sum is σ = 146807856. Its totient is φ = 48935950.

The previous prime is 97871887. The next prime is 97871909. The reversal of 97871902 is 20917879.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97871909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24467974 + ... + 24467977.

It is an arithmetic number, because the mean of its divisors is an integer number (36701964).

Almost surely, 2^97871902 is an apocalyptic number.

97871902 is a deficient number, since it is larger than the sum of its proper divisors (48935954).

97871902 is a wasteful number, since it uses less digits than its factorization.

97871902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48935953.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 97871902 is about 9893.0228949498. The cubic root of 97871902 is about 460.8426614580.

The spelling of 97871902 in words is "ninety-seven million, eight hundred seventy-one thousand, nine hundred two".