39706225 has 12 divisors (see below), whose sum is σ = 53023516. Its totient is φ = 29321280.

The previous prime is 39706207. The next prime is 39706259. The reversal of 39706225 is 52260793.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 167281 + 39538944 = 409^2 + 6288^2 .

It is not a de Polignac number, because 39706225 - 2⁹ = 39705713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60762 + ... + 61411.

Almost surely, 2^39706225 is an apocalyptic number.

It is an amenable number.

39706225 is a deficient number, since it is larger than the sum of its proper divisors (13317291).

39706225 is a wasteful number, since it uses less digits than its factorization.

39706225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122196 (or 122191 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 39706225 is about 6301.2875668390. The cubic root of 39706225 is about 341.1558842729.

The spelling of 39706225 in words is "thirty-nine million, seven hundred six thousand, two hundred twenty-five".