83900404 has 12 divisors (see below), whose sum is σ = 167800864. Its totient is φ = 35957304.

The previous prime is 83900387. The next prime is 83900407. The reversal of 83900404 is 40400938.

83900404 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 2996443 = 83900404 / (8 + 3 + 9 + 0 + 0 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83900407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1498194 + ... + 1498249.

Almost surely, 2^83900404 is an apocalyptic number.

It is an amenable number.

83900404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83900404 is a wasteful number, since it uses less digits than its factorization.

83900404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996454 (or 2996452 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 83900404 is about 9159.7163711547. The cubic root of 83900404 is about 437.7787572067.

The spelling of 83900404 in words is "eighty-three million, nine hundred thousand, four hundred four".