999275945 has 16 divisors (see below), whose sum is σ = 1210999680. Its totient is φ = 791539584.

The previous prime is 999275941. The next prime is 999275947. The reversal of 999275945 is 549572999.

It is a cyclic number.

It is not a de Polignac number, because 999275945 - 2² = 999275941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999275941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299054 + ... + 302376.

It is an arithmetic number, because the mean of its divisors is an integer number (75687480).

Almost surely, 2^999275945 is an apocalyptic number.

It is an amenable number.

999275945 is a deficient number, since it is larger than the sum of its proper divisors (211723735).

999275945 is a wasteful number, since it uses less digits than its factorization.

999275945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904.

The product of its digits is 9185400, while the sum is 59.

The square root of 999275945 is about 31611.3262138747. The cubic root of 999275945 is about 999.7585900593.

The spelling of 999275945 in words is "nine hundred ninety-nine million, two hundred seventy-five thousand, nine hundred forty-five".