83943172 has 6 divisors (see below), whose sum is σ = 146900558. Its totient is φ = 41971584.

The previous prime is 83943107. The next prime is 83943179. The reversal of 83943172 is 27134938.

It can be written as a sum of positive squares in only one way, i.e., 83795716 + 147456 = 9154^2 + 384^2 .

It is a super-2 number, since 2×83943172² = 14092912250843168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83943179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10492893 + ... + 10492900.

Almost surely, 2^83943172 is an apocalyptic number.

It is an amenable number.

83943172 is a deficient number, since it is larger than the sum of its proper divisors (62957386).

83943172 is a wasteful number, since it uses less digits than its factorization.

83943172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20985797 (or 20985795 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 83943172 is about 9162.0506438242. The cubic root of 83943172 is about 437.8531300765.

The spelling of 83943172 in words is "eighty-three million, nine hundred forty-three thousand, one hundred seventy-two".