39899080 has 48 divisors (see below), whose sum is σ = 97028820. Its totient is φ = 14678784.

The previous prime is 39899047. The next prime is 39899081. The reversal of 39899080 is 8099893.

It can be written as a sum of positive squares in 6 ways, for example, as 1036324 + 38862756 = 1018^2 + 6234^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39899080.

It is not an unprimeable number, because it can be changed into a prime (39899081) 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, 143902 + ... + 144178.

Almost surely, 2^39899080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39899080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48514410).

39899080 is an abundant number, since it is smaller than the sum of its proper divisors (57129740).

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

39899080 is a wasteful number, since it uses less digits than its factorization.

39899080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 39899080 is about 6316.5718550492. The cubic root of 39899080 is about 341.7073291548.

The spelling of 39899080 in words is "thirty-nine million, eight hundred ninety-nine thousand, eighty".