39404980 has 48 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 14187008.

The previous prime is 39404927. The next prime is 39404983. The reversal of 39404980 is 8940493.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39404983) 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, 5301 + ... + 10339.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^39404980 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 39404980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45722880).

39404980 is an abundant number, since it is smaller than the sum of its proper divisors (52040780).

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

39404980 is a wasteful number, since it uses less digits than its factorization.

39404980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088 (or 5086 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 39404980 is about 6277.3386080408. The cubic root of 39404980 is about 340.2909274620.

The spelling of 39404980 in words is "thirty-nine million, four hundred four thousand, nine hundred eighty".