402064444 has 12 divisors (see below), whose sum is σ = 703755864. Its totient is φ = 200991344.

The previous prime is 402064441. The next prime is 402064471. The reversal of 402064444 is 444460204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402064441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847 + ... + 39049.

It is an arithmetic number, because the mean of its divisors is an integer number (58646322).

Almost surely, 2^402064444 is an apocalyptic number.

It is an amenable number.

402064444 is a deficient number, since it is larger than the sum of its proper divisors (301691420).

402064444 is a wasteful number, since it uses less digits than its factorization.

402064444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444 (or 20442 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 402064444 is about 20051.5446786526. The cubic root of 402064444 is about 738.0717047075.

The spelling of 402064444 in words is "four hundred two million, sixty-four thousand, four hundred forty-four".