99863901 has 8 divisors (see below), whose sum is σ = 147946560. Its totient is φ = 66575916.

The previous prime is 99863891. The next prime is 99863909. The reversal of 99863901 is 10936899.

99863901 is a `hidden beast` number, since 9 + 9 + 8 + 639 + 0 + 1 = 666.

It is not a de Polignac number, because 99863901 - 2⁷ = 99863773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99863909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849305 + ... + 1849358.

It is an arithmetic number, because the mean of its divisors is an integer number (18493320).

Almost surely, 2^99863901 is an apocalyptic number.

It is an amenable number.

99863901 is a deficient number, since it is larger than the sum of its proper divisors (48082659).

99863901 is a wasteful number, since it uses less digits than its factorization.

99863901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698672 (or 3698666 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 99863901 is about 9993.1927330558. The cubic root of 99863901 is about 463.9482158940.

The spelling of 99863901 in words is "ninety-nine million, eight hundred sixty-three thousand, nine hundred one".