39249705 has 16 divisors (see below), whose sum is σ = 68508864. Its totient is φ = 19030080.

The previous prime is 39249697. The next prime is 39249709. The reversal of 39249705 is 50794293.

It is not a de Polignac number, because 39249705 - 2³ = 39249697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39249709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118774 + ... + 119103.

It is an arithmetic number, because the mean of its divisors is an integer number (4281804).

Almost surely, 2^39249705 is an apocalyptic number.

It is an amenable number.

39249705 is a deficient number, since it is larger than the sum of its proper divisors (29259159).

39249705 is a wasteful number, since it uses less digits than its factorization.

39249705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237896.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 39249705 is about 6264.9584994635. The cubic root of 39249705 is about 339.8433678764.

The spelling of 39249705 in words is "thirty-nine million, two hundred forty-nine thousand, seven hundred five".