9997902715 has 8 divisors (see below), whose sum is σ = 12002341680. Its totient is φ = 7995083232.

The previous prime is 9997902703. The next prime is 9997902737. The reversal of 9997902715 is 5172097999.

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

It is a cyclic number.

It is not a de Polignac number, because 9997902715 - 2¹¹ = 9997900667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9997902715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391245 + ... + 416014.

It is an arithmetic number, because the mean of its divisors is an integer number (1500292710).

Almost surely, 2^9997902715 is an apocalyptic number.

9997902715 is a deficient number, since it is larger than the sum of its proper divisors (2004438965).

9997902715 is a wasteful number, since it uses less digits than its factorization.

9997902715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809741.

The product of its (nonzero) digits is 3214890, while the sum is 58.

The square root of 9997902715 is about 99989.5130251168. The cubic root of 9997902715 is about 2154.2840640492.

The spelling of 9997902715 in words is "nine billion, nine hundred ninety-seven million, nine hundred two thousand, seven hundred fifteen".