39985673 has 16 divisors (see below), whose sum is σ = 50265600. Its totient is φ = 30960576.

The previous prime is 39985643. The next prime is 39985697. The reversal of 39985673 is 37658993.

It is a cyclic number.

It is not a de Polignac number, because 39985673 - 2⁶ = 39985609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39985643) 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, 398 + ... + 8951.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^39985673 is an apocalyptic number.

It is an amenable number.

39985673 is a deficient number, since it is larger than the sum of its proper divisors (10279927).

39985673 is a wasteful number, since it uses less digits than its factorization.

39985673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416.

The product of its digits is 1224720, while the sum is 50.

The square root of 39985673 is about 6323.4225700960. The cubic root of 39985673 is about 341.9543530838.

The spelling of 39985673 in words is "thirty-nine million, nine hundred eighty-five thousand, six hundred seventy-three".