999930772 has 48 divisors (see below), whose sum is σ = 1865711232.
Its totient is φ = 468236160.
The previous prime is 999930751. The next prime is 999930821. The reversal of 999930772 is 277039999.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450738 + ... + 452950.
It is an arithmetic number, because the mean of its divisors is an integer number (38868984).
Almost surely, 2999930772 is an apocalyptic number.
999930772 is the 16903-rd centered heptagonal number.
It is an amenable number.
999930772 is a deficient number, since it is larger than the sum of its proper divisors (865780460).
999930772 is a wasteful number, since it uses less digits than its factorization.
999930772 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2368 (or 2366 counting only the distinct ones).
The product of its (nonzero) digits is 1928934, while the sum is 55.
The square root of 999930772 is about 31621.6819919498.
The cubic root of 999930772 is about 999.9769234675.
The spelling of 999930772 in words is "nine hundred ninety-nine million, nine hundred thirty thousand, seven hundred seventy-two".