297138902 has 8 divisors (see below), whose sum is σ = 445931616. Its totient is φ = 148495032.

The previous prime is 297138883. The next prime is 297138913. The reversal of 297138902 is 209831792.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 297138902.

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, 32078 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (55741452).

Almost surely, 2^297138902 is an apocalyptic number.

297138902 is a deficient number, since it is larger than the sum of its proper divisors (148792714).

297138902 is a wasteful number, since it uses less digits than its factorization.

297138902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74422.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 297138902 is about 17237.7174242995. The cubic root of 297138902 is about 667.2980228398.

The spelling of 297138902 in words is "two hundred ninety-seven million, one hundred thirty-eight thousand, nine hundred two".