99504971 has 4 divisors (see below), whose sum is σ = 100435032. Its totient is φ = 98574912.

The previous prime is 99504949. The next prime is 99504997. The reversal of 99504971 is 17940599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17940599 = 31 ⋅578729.

It is a cyclic number.

It is not a de Polignac number, because 99504971 - 2⁶ = 99504907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99504941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464870 + ... + 465083.

It is an arithmetic number, because the mean of its divisors is an integer number (25108758).

Almost surely, 2^99504971 is an apocalyptic number.

99504971 is a deficient number, since it is larger than the sum of its proper divisors (930061).

99504971 is a wasteful number, since it uses less digits than its factorization.

99504971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930060.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 99504971 is about 9975.2178422328. The cubic root of 99504971 is about 463.3917090272.

The spelling of 99504971 in words is "ninety-nine million, five hundred four thousand, nine hundred seventy-one".