409638968 has 8 divisors (see below), whose sum is σ = 768073080. Its totient is φ = 204819480.

The previous prime is 409638967. The next prime is 409639033. The reversal of 409638968 is 869836904.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409638967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602428 + ... + 25602443.

It is an arithmetic number, because the mean of its divisors is an integer number (96009135).

Almost surely, 2^409638968 is an apocalyptic number.

It is an amenable number.

409638968 is a deficient number, since it is larger than the sum of its proper divisors (358434112).

409638968 is a wasteful number, since it uses less digits than its factorization.

409638968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51204877 (or 51204873 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 409638968 is about 20239.5397180865. The cubic root of 409638968 is about 742.6777638596.

The spelling of 409638968 in words is "four hundred nine million, six hundred thirty-eight thousand, nine hundred sixty-eight".