39859980 has 48 divisors (see below), whose sum is σ = 111884640. Its totient is φ = 10603008.

The previous prime is 39859979. The next prime is 39859993. The reversal of 39859980 is 8995893.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42072 + ... + 43008.

It is an arithmetic number, because the mean of its divisors is an integer number (2330930).

Almost surely, 2^39859980 is an apocalyptic number.

39859980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39859980 is an abundant number, since it is smaller than the sum of its proper divisors (72024660).

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

39859980 is a wasteful number, since it uses less digits than its factorization.

39859980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 39859980 is about 6313.4760631525. The cubic root of 39859980 is about 341.5956714145.

It can be divided in two parts, 398 and 59980, that added together give a triangular number (60378 = T₃₄₇).

The spelling of 39859980 in words is "thirty-nine million, eight hundred fifty-nine thousand, nine hundred eighty".