83912872 has 8 divisors (see below), whose sum is σ = 157336650. Its totient is φ = 41956432.

The previous prime is 83912869. The next prime is 83912879. The reversal of 83912872 is 27821938.

It can be written as a sum of positive squares in only one way, i.e., 73376356 + 10536516 = 8566^2 + 3246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (83912879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5244547 + ... + 5244562.

Almost surely, 2^83912872 is an apocalyptic number.

It is an amenable number.

83912872 is a deficient number, since it is larger than the sum of its proper divisors (73423778).

83912872 is a wasteful number, since it uses less digits than its factorization.

83912872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10489115 (or 10489111 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 83912872 is about 9160.3969346312. The cubic root of 83912872 is about 437.8004414693.

The spelling of 83912872 in words is "eighty-three million, nine hundred twelve thousand, eight hundred seventy-two".