402460822404 has 27 divisors (see below), whose sum is σ = 1017341145093. Its totient is φ = 134152338672.

The previous prime is 402460822369. The next prime is 402460822417. The reversal of 402460822404 is 404228064204.

It is a happy number.

The square root of 402460822404 is 634398.

It is a perfect power (a square), and thus also a powerful number.

402460822404 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 608 + 2 + 2 + 40 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 218378636100 + 184082186304 = 467310^2 + 429048^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3753522 + ... + 3859254.

Almost surely, 2^402460822404 is an apocalyptic number.

402460822404 is the 634398-th square number.

It is an amenable number.

402460822404 is an abundant number, since it is smaller than the sum of its proper divisors (614880322689).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402460822404 is an frugal number, since it uses more digits than its factorization.

402460822404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211476 (or 105738 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

Multiplying 402460822404 by its sum of digits (36), we get a square (14488589606544 = 3806388²).

402460822404 divided by its sum of digits (36) gives a square (11179467289 = 105733²).

Adding to 402460822404 its reverse (404228064204), we get a palindrome (806688886608).

The spelling of 402460822404 in words is "four hundred two billion, four hundred sixty million, eight hundred twenty-two thousand, four hundred four".