393671225 has 12 divisors (see below), whose sum is σ = 489234684. Its totient is φ = 314238720.

The previous prime is 393671221. The next prime is 393671233. The reversal of 393671225 is 522176393.

393671225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 6801664 + 386869561 = 2608^2 + 19669^2 .

It is not a de Polignac number, because 393671225 - 2² = 393671221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393671221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5804 + ... + 28653.

It is an arithmetic number, because the mean of its divisors is an integer number (40769557).

Almost surely, 2^393671225 is an apocalyptic number.

It is an amenable number.

393671225 is a deficient number, since it is larger than the sum of its proper divisors (95563459).

393671225 is a wasteful number, since it uses less digits than its factorization.

393671225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34924 (or 34919 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 393671225 is about 19841.1497902717. The cubic root of 393671225 is about 732.8997224267.

The spelling of 393671225 in words is "three hundred ninety-three million, six hundred seventy-one thousand, two hundred twenty-five".