408431138 has 8 divisors (see below), whose sum is σ = 632409600. Its totient is φ = 197627940.

The previous prime is 408431117. The next prime is 408431141. The reversal of 408431138 is 831134804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3293738 + ... + 3293861.

It is an arithmetic number, because the mean of its divisors is an integer number (79051200).

Almost surely, 2^408431138 is an apocalyptic number.

408431138 is a deficient number, since it is larger than the sum of its proper divisors (223978462).

408431138 is a wasteful number, since it uses less digits than its factorization.

408431138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587632.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 408431138 is about 20209.6793146255. The cubic root of 408431138 is about 741.9471110676.

The spelling of 408431138 in words is "four hundred eight million, four hundred thirty-one thousand, one hundred thirty-eight".