999711051 has 8 divisors (see below), whose sum is σ = 1333094544. Its totient is φ = 666400800.

The previous prime is 999711047. The next prime is 999711059. The reversal of 999711051 is 150117999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999711051 - 2² = 999711047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999710994 and 999711012.

It is not an unprimeable number, because it can be changed into a prime (999711059) 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, 40845 + ... + 60561.

It is an arithmetic number, because the mean of its divisors is an integer number (166636818).

Almost surely, 2^999711051 is an apocalyptic number.

999711051 is the 16901-st nonagonal number.

999711051 is a deficient number, since it is larger than the sum of its proper divisors (333383493).

999711051 is a wasteful number, since it uses less digits than its factorization.

999711051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36621.

The product of its (nonzero) digits is 25515, while the sum is 42.

The square root of 999711051 is about 31618.2075867687. The cubic root of 999711051 is about 999.9036743883.

The spelling of 999711051 in words is "nine hundred ninety-nine million, seven hundred eleven thousand, fifty-one".