999071372 has 12 divisors (see below), whose sum is σ = 1882865376. Its totient is φ = 461109840.

The previous prime is 999071347. The next prime is 999071377. The reversal of 999071372 is 273170999.

It is not an unprimeable number, because it can be changed into a prime (999071377) 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, 9606404 + ... + 9606507.

It is an arithmetic number, because the mean of its divisors is an integer number (156905448).

Almost surely, 2^999071372 is an apocalyptic number.

It is an amenable number.

999071372 is a deficient number, since it is larger than the sum of its proper divisors (883794004).

999071372 is a wasteful number, since it uses less digits than its factorization.

999071372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212928 (or 19212926 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 999071372 is about 31608.0902934676. The cubic root of 999071372 is about 999.6903614672.

The spelling of 999071372 in words is "nine hundred ninety-nine million, seventy-one thousand, three hundred seventy-two".