39493404 has 18 divisors (see below), whose sum is σ = 99830640. Its totient is φ = 13164456.

The previous prime is 39493403. The next prime is 39493417. The reversal of 39493404 is 40439493.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1097039 = 39493404 / (3 + 9 + 4 + 9 + 3 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39493403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548484 + ... + 548555.

Almost surely, 2^39493404 is an apocalyptic number.

It is an amenable number.

39493404 is an abundant number, since it is smaller than the sum of its proper divisors (60337236).

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

39493404 is a wasteful number, since it uses less digits than its factorization.

39493404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097049 (or 1097044 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 39493404 is about 6284.3777734952. The cubic root of 39493404 is about 340.5452726907.

The spelling of 39493404 in words is "thirty-nine million, four hundred ninety-three thousand, four hundred four".