408401634 has 16 divisors (see below), whose sum is σ = 838879488. Its totient is φ = 132454512.

The previous prime is 408401621. The next prime is 408401663. The reversal of 408401634 is 436104804.

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, 919602 + ... + 920045.

It is an arithmetic number, because the mean of its divisors is an integer number (52429968).

Almost surely, 2^408401634 is an apocalyptic number.

408401634 is an abundant number, since it is smaller than the sum of its proper divisors (430477854).

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

408401634 is a wasteful number, since it uses less digits than its factorization.

408401634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839689.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 408401634 is about 20208.9493541846. The cubic root of 408401634 is about 741.9292451961.

The spelling of 408401634 in words is "four hundred eight million, four hundred one thousand, six hundred thirty-four".