39670825 has 12 divisors (see below), whose sum is σ = 49282560. Its totient is φ = 31678160.

The previous prime is 39670823. The next prime is 39670907. The reversal of 39670825 is 52807693.

It is not a de Polignac number, because 39670825 - 2¹ = 39670823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39670823) 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, 16872 + ... + 19078.

It is an arithmetic number, because the mean of its divisors is an integer number (4106880).

Almost surely, 2^39670825 is an apocalyptic number.

It is an amenable number.

39670825 is a deficient number, since it is larger than the sum of its proper divisors (9611735).

39670825 is a wasteful number, since it uses less digits than its factorization.

39670825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 39670825 is about 6298.4779907530. The cubic root of 39670825 is about 341.0544685282.

The spelling of 39670825 in words is "thirty-nine million, six hundred seventy thousand, eight hundred twenty-five".