383690172 has 12 divisors (see below), whose sum is σ = 895277096. Its totient is φ = 127896720.

The previous prime is 383690171. The next prime is 383690191. The reversal of 383690172 is 271096383.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 383690172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383690171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15987079 + ... + 15987102.

Almost surely, 2^383690172 is an apocalyptic number.

It is an amenable number.

383690172 is an abundant number, since it is smaller than the sum of its proper divisors (511586924).

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

383690172 is a wasteful number, since it uses less digits than its factorization.

383690172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31974188 (or 31974186 counting only the distinct ones).

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

The square root of 383690172 is about 19588.0109250531. The cubic root of 383690172 is about 726.6527002151.

The spelling of 383690172 in words is "three hundred eighty-three million, six hundred ninety thousand, one hundred seventy-two".