83389864 has 8 divisors (see below), whose sum is σ = 156356010. Its totient is φ = 41694928.

The previous prime is 83389861. The next prime is 83389883. The reversal of 83389864 is 46898338.

It can be written as a sum of positive squares in only one way, i.e., 53904964 + 29484900 = 7342^2 + 5430^2 .

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 (83389861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5211859 + ... + 5211874.

Almost surely, 2^83389864 is an apocalyptic number.

It is an amenable number.

83389864 is a deficient number, since it is larger than the sum of its proper divisors (72966146).

83389864 is a wasteful number, since it uses less digits than its factorization.

83389864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423739 (or 10423735 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 83389864 is about 9131.8050789534. The cubic root of 83389864 is about 436.8889782150. Note that the first 3 decimals are identical.

The spelling of 83389864 in words is "eighty-three million, three hundred eighty-nine thousand, eight hundred sixty-four".