1039404 has 24 divisors (see below), whose sum is σ = 2491888. Its totient is φ = 336960.

The previous prime is 1039387. The next prime is 1039421. The reversal of 1039404 is 4049301.

It is an interprime number because it is at equal distance from previous prime (1039387) and next prime (1039421).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727 + ... + 1614.

2^1039404 is an apocalyptic number.

It is an amenable number.

1039404 is an abundant number, since it is smaller than the sum of its proper divisors (1452484).

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

1039404 is a wasteful number, since it uses less digits than its factorization.

1039404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1039404 is about 1019.5116478001. The cubic root of 1039404 is about 101.2965827413.

The spelling of 1039404 in words is "one million, thirty-nine thousand, four hundred four".