39400080 has 80 divisors (see below), whose sum is σ = 122950464. Its totient is φ = 10437120.

The previous prime is 39400069. The next prime is 39400093. The reversal of 39400080 is 8000493.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 39400080.

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, 42987 + ... + 43893.

Almost surely, 2^39400080 is an apocalyptic number.

39400080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39400080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61475232).

39400080 is an abundant number, since it is smaller than the sum of its proper divisors (83550384).

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

39400080 is a wasteful number, since it uses less digits than its factorization.

39400080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 39400080 is about 6276.9483031167. The cubic root of 39400080 is about 340.2768218450.

The spelling of 39400080 in words is "thirty-nine million, four hundred thousand, eighty".