395144172 has 18 divisors (see below), whose sum is σ = 998836748. Its totient is φ = 131714712.

The previous prime is 395144161. The next prime is 395144173. The reversal of 395144172 is 271441593.

395144172 is a `hidden beast` number, since 39 + 514 + 41 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×395144172² = 312277833331131168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10976227 = 395144172 / (3 + 9 + 5 + 1 + 4 + 4 + 1 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (395144173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5488078 + ... + 5488149.

Almost surely, 2^395144172 is an apocalyptic number.

It is an amenable number.

395144172 is an abundant number, since it is smaller than the sum of its proper divisors (603692576).

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

395144172 is a wasteful number, since it uses less digits than its factorization.

395144172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10976237 (or 10976232 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 395144172 is about 19878.2336237403. The cubic root of 395144172 is about 733.8126490876.

The spelling of 395144172 in words is "three hundred ninety-five million, one hundred forty-four thousand, one hundred seventy-two".