999939201 has 32 divisors (see below), whose sum is σ = 1522281600. Its totient is φ = 579870720.

The previous prime is 999939137. The next prime is 999939203. The reversal of 999939201 is 102939999.

It is not a de Polignac number, because 999939201 - 2⁶ = 999939137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (999939203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27145 + ... + 52313.

It is an arithmetic number, because the mean of its divisors is an integer number (47571300).

Almost surely, 2^999939201 is an apocalyptic number.

It is an amenable number.

999939201 is a deficient number, since it is larger than the sum of its proper divisors (522342399).

999939201 is a wasteful number, since it uses less digits than its factorization.

999939201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25249.

The product of its (nonzero) digits is 354294, while the sum is 51.

The square root of 999939201 is about 31621.8152704743. The cubic root of 999939201 is about 999.9797332559.

The spelling of 999939201 in words is "nine hundred ninety-nine million, nine hundred thirty-nine thousand, two hundred one".