39933980 has 24 divisors (see below), whose sum is σ = 87508512. Its totient is φ = 15278912.

The previous prime is 39933977. The next prime is 39933997. The reversal of 39933980 is 8933993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42947 + ... + 43866.

It is an arithmetic number, because the mean of its divisors is an integer number (3646188).

Almost surely, 2^39933980 is an apocalyptic number.

It is an amenable number.

39933980 is an abundant number, since it is smaller than the sum of its proper divisors (47574532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39933980 is a wasteful number, since it uses less digits than its factorization.

39933980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86845 (or 86843 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 39933980 is about 6319.3338256497. Note that the first 3 decimals coincide. The cubic root of 39933980 is about 341.8069313707.

The spelling of 39933980 in words is "thirty-nine million, nine hundred thirty-three thousand, nine hundred eighty".