999951113 has 4 divisors (see below), whose sum is σ = 1142801280. Its totient is φ = 857100948.

The previous prime is 999951109. The next prime is 999951131. The reversal of 999951113 is 311159999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 999951113 - 2² = 999951109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999951163) 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, 71425073 + ... + 71425086.

It is an arithmetic number, because the mean of its divisors is an integer number (285700320).

Almost surely, 2^999951113 is an apocalyptic number.

It is an amenable number.

999951113 is a deficient number, since it is larger than the sum of its proper divisors (142850167).

999951113 is a wasteful number, since it uses less digits than its factorization.

999951113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142850166.

The product of its digits is 98415, while the sum is 47.

The square root of 999951113 is about 31622.0036208966. The cubic root of 999951113 is about 999.9837040678.

The spelling of 999951113 in words is "nine hundred ninety-nine million, nine hundred fifty-one thousand, one hundred thirteen".