404162644 has 6 divisors (see below), whose sum is σ = 707284634. Its totient is φ = 202081320.

The previous prime is 404162609. The next prime is 404162653. The reversal of 404162644 is 446261404.

It can be written as a sum of positive squares in only one way, i.e., 329858244 + 74304400 = 18162^2 + 8620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50520327 + ... + 50520334.

Almost surely, 2^404162644 is an apocalyptic number.

It is an amenable number.

404162644 is a deficient number, since it is larger than the sum of its proper divisors (303121990).

404162644 is a wasteful number, since it uses less digits than its factorization.

404162644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101040665 (or 101040663 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 404162644 is about 20103.7967558369. The cubic root of 404162644 is about 739.3533698689.

The spelling of 404162644 in words is "four hundred four million, one hundred sixty-two thousand, six hundred forty-four".