402044404 has 6 divisors (see below), whose sum is σ = 703577714. Its totient is φ = 201022200.

The previous prime is 402044399. The next prime is 402044411. The reversal of 402044404 is 404440204.

It can be written as a sum of positive squares in only one way, i.e., 364810000 + 37234404 = 19100^2 + 6102^2 .

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, 50255547 + ... + 50255554.

Almost surely, 2^402044404 is an apocalyptic number.

It is an amenable number.

402044404 is a deficient number, since it is larger than the sum of its proper divisors (301533310).

402044404 is a wasteful number, since it uses less digits than its factorization.

402044404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100511105 (or 100511103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402044404 is about 20051.0449603007. The cubic root of 402044404 is about 738.0594419945.

Adding to 402044404 its reverse (404440204), we get a palindrome (806484608).

The spelling of 402044404 in words is "four hundred two million, forty-four thousand, four hundred four".