39879860 has 24 divisors (see below), whose sum is σ = 88156320. Its totient is φ = 15112224.

The previous prime is 39879859. The next prime is 39879869. The reversal of 39879860 is 6897893.

It is a junction number, because it is equal to n+sod(n) for n = 39879799 and 39879808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39879869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52094 + ... + 52853.

It is an arithmetic number, because the mean of its divisors is an integer number (3673180).

Almost surely, 2^39879860 is an apocalyptic number.

It is an amenable number.

39879860 is an abundant number, since it is smaller than the sum of its proper divisors (48276460).

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

39879860 is a wasteful number, since it uses less digits than its factorization.

39879860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104975 (or 104973 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 39879860 is about 6315.0502769178. The cubic root of 39879860 is about 341.6524517848.

The spelling of 39879860 in words is "thirty-nine million, eight hundred seventy-nine thousand, eight hundred sixty".