395140772 has 24 divisors (see below), whose sum is σ = 746201400. Its totient is φ = 182002176.

The previous prime is 395140763. The next prime is 395140793. The reversal of 395140772 is 277041593.

It can be written as a sum of positive squares in 4 ways, for example, as 115047076 + 280093696 = 10726^2 + 16736^2 .

It is a super-2 number, since 2×395140772² = 312272459393511968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19004 + ... + 33932.

It is an arithmetic number, because the mean of its divisors is an integer number (31091725).

Almost surely, 2^395140772 is an apocalyptic number.

It is an amenable number.

395140772 is a deficient number, since it is larger than the sum of its proper divisors (351060628).

395140772 is a wasteful number, since it uses less digits than its factorization.

395140772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15455 (or 15453 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 395140772 is about 19878.1481028792. The cubic root of 395140772 is about 733.8105443958.

The spelling of 395140772 in words is "three hundred ninety-five million, one hundred forty thousand, seven hundred seventy-two".