409048664 has 8 divisors (see below), whose sum is σ = 766966260. Its totient is φ = 204524328.

The previous prime is 409048643. The next prime is 409048667. The reversal of 409048664 is 466840904.

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 (409048667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25565534 + ... + 25565549.

Almost surely, 2^409048664 is an apocalyptic number.

It is an amenable number.

409048664 is a deficient number, since it is larger than the sum of its proper divisors (357917596).

409048664 is a wasteful number, since it uses less digits than its factorization.

409048664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51131089 (or 51131085 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 409048664 is about 20224.9515203374. The cubic root of 409048664 is about 742.3208508673.

The spelling of 409048664 in words is "four hundred nine million, forty-eight thousand, six hundred sixty-four".