408424090 has 16 divisors (see below), whose sum is σ = 741909960. Its totient is φ = 161870400.

The previous prime is 408424073. The next prime is 408424157. The reversal of 408424090 is 90424804.

It can be written as a sum of positive squares in 4 ways, for example, as 407272761 + 1151329 = 20181^2 + 1073^2 .

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, 186261 + ... + 188440.

Almost surely, 2^408424090 is an apocalyptic number.

408424090 is a deficient number, since it is larger than the sum of its proper divisors (333485870).

408424090 is a wasteful number, since it uses less digits than its factorization.

408424090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374817.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 408424090 is about 20209.5049419821. The cubic root of 408424090 is about 741.9428432953.

Adding to 408424090 its reverse (90424804), we get a palindrome (498848894).

The spelling of 408424090 in words is "four hundred eight million, four hundred twenty-four thousand, ninety".