408077940 has 24 divisors (see below), whose sum is σ = 1142618400. Its totient is φ = 108820768.

The previous prime is 408077909. The next prime is 408077941. The reversal of 408077940 is 49770804.

It is a super-2 number, since 2×408077940² = 333055210229287200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408077941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3400590 + ... + 3400709.

It is an arithmetic number, because the mean of its divisors is an integer number (47609100).

Almost surely, 2^408077940 is an apocalyptic number.

It is an amenable number.

408077940 is an abundant number, since it is smaller than the sum of its proper divisors (734540460).

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

408077940 is a wasteful number, since it uses less digits than its factorization.

408077940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801311 (or 6801309 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 408077940 is about 20200.9390870821. The cubic root of 408077940 is about 741.7331787901.

The spelling of 408077940 in words is "four hundred eight million, seventy-seven thousand, nine hundred forty".