396956225 has 6 divisors (see below), whose sum is σ = 492225750. Its totient is φ = 317564960.

The previous prime is 396956221. The next prime is 396956233. The reversal of 396956225 is 522659693.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 109077136 + 287879089 = 10444^2 + 16967^2 .

It is not a de Polignac number, because 396956225 - 2² = 396956221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396956225.

It is not an unprimeable number, because it can be changed into a prime (396956221) 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, 7939100 + ... + 7939149.

It is an arithmetic number, because the mean of its divisors is an integer number (82037625).

Almost surely, 2^396956225 is an apocalyptic number.

It is an amenable number.

396956225 is a deficient number, since it is larger than the sum of its proper divisors (95269525).

396956225 is a wasteful number, since it uses less digits than its factorization.

396956225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15878259 (or 15878254 counting only the distinct ones).

The product of its digits is 874800, while the sum is 47.

The square root of 396956225 is about 19923.7603127522. The cubic root of 396956225 is about 734.9326453465.

The spelling of 396956225 in words is "three hundred ninety-six million, nine hundred fifty-six thousand, two hundred twenty-five".