39398985 has 48 divisors (see below), whose sum is σ = 71804928. Its totient is φ = 19958400.

The previous prime is 39398941. The next prime is 39398987. The reversal of 39398985 is 58989393.

It is not a de Polignac number, because 39398985 - 2⁷ = 39398857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39398987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84864 + ... + 85326.

It is an arithmetic number, because the mean of its divisors is an integer number (1495936).

Almost surely, 2^39398985 is an apocalyptic number.

It is an amenable number.

39398985 is a deficient number, since it is larger than the sum of its proper divisors (32405943).

39398985 is a wasteful number, since it uses less digits than its factorization.

39398985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 39398985 is about 6276.8610785965. The cubic root of 39398985 is about 340.2736695115.

The spelling of 39398985 in words is "thirty-nine million, three hundred ninety-eight thousand, nine hundred eighty-five".