83897172 has 36 divisors (see below), whose sum is σ = 212372160. Its totient is φ = 27926352.

The previous prime is 83897117. The next prime is 83897173. The reversal of 83897172 is 27179838.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83897173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36283 + ... + 38525.

Almost surely, 2^83897172 is an apocalyptic number.

It is an amenable number.

83897172 is an abundant number, since it is smaller than the sum of its proper divisors (128474988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83897172 is a wasteful number, since it uses less digits than its factorization.

83897172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292 (or 3287 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 83897172 is about 9159.5399447789. The cubic root of 83897172 is about 437.7731357832.

The spelling of 83897172 in words is "eighty-three million, eight hundred ninety-seven thousand, one hundred seventy-two".