99717902 has 4 divisors (see below), whose sum is σ = 149576856. Its totient is φ = 49858950.

The previous prime is 99717899. The next prime is 99717907. The reversal of 99717902 is 20971799.

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 (99717907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24929474 + ... + 24929477.

It is an arithmetic number, because the mean of its divisors is an integer number (37394214).

Almost surely, 2^99717902 is an apocalyptic number.

99717902 is a deficient number, since it is larger than the sum of its proper divisors (49858954).

99717902 is a wasteful number, since it uses less digits than its factorization.

99717902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49858953.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 99717902 is about 9985.8851385343. The cubic root of 99717902 is about 463.7220113254.

The spelling of 99717902 in words is "ninety-nine million, seven hundred seventeen thousand, nine hundred two".