39994480 has 40 divisors (see below), whose sum is σ = 96199200. Its totient is φ = 15445248.

The previous prime is 39994477. The next prime is 39994481. The reversal of 39994480 is 8449993.

39994480 = T₁₆₁ + T₁₆₂ + ... + T₆₂₄.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 39994480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39994481) 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, 6300 + ... + 10939.

It is an arithmetic number, because the mean of its divisors is an integer number (2404980).

Almost surely, 2^39994480 is an apocalyptic number.

It is an amenable number.

39994480 is an abundant number, since it is smaller than the sum of its proper divisors (56204720).

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

39994480 is a wasteful number, since it uses less digits than its factorization.

39994480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17281 (or 17275 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 39994480 is about 6324.1189109630. The cubic root of 39994480 is about 341.9794568329.

The spelling of 39994480 in words is "thirty-nine million, nine hundred ninety-four thousand, four hundred eighty".