404878436 has 6 divisors (see below), whose sum is σ = 708537270. Its totient is φ = 202439216.

The previous prime is 404878421. The next prime is 404878447. The reversal of 404878436 is 634878404.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 69622336 = 18310^2 + 8344^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50609801 + ... + 50609808.

It is an arithmetic number, because the mean of its divisors is an integer number (118089545).

Almost surely, 2^404878436 is an apocalyptic number.

It is an amenable number.

404878436 is a deficient number, since it is larger than the sum of its proper divisors (303658834).

404878436 is a wasteful number, since it uses less digits than its factorization.

404878436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101219613 (or 101219611 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The square root of 404878436 is about 20121.5912889612. The cubic root of 404878436 is about 739.7895895570.

The spelling of 404878436 in words is "four hundred four million, eight hundred seventy-eight thousand, four hundred thirty-six".