83172369 has 16 divisors (see below), whose sum is σ = 128165760. Its totient is φ = 46992000.

The previous prime is 83172361. The next prime is 83172409. The reversal of 83172369 is 96327138.

It is not a de Polignac number, because 83172369 - 2³ = 83172361 is a prime.

It is a super-2 number, since 2×83172369² = 13835285930144322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83172361) 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, 20382 + ... + 24119.

It is an arithmetic number, because the mean of its divisors is an integer number (8010360).

Almost surely, 2^83172369 is an apocalyptic number.

83172369 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

83172369 is a deficient number, since it is larger than the sum of its proper divisors (44993391).

83172369 is a wasteful number, since it uses less digits than its factorization.

83172369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44600.

The product of its digits is 54432, while the sum is 39.

The square root of 83172369 is about 9119.8886506360. Note that the first 3 decimals coincide. The cubic root of 83172369 is about 436.5088205070.

The spelling of 83172369 in words is "eighty-three million, one hundred seventy-two thousand, three hundred sixty-nine".