516400004 has 12 divisors (see below), whose sum is σ = 909457164. Its totient is φ = 256555104.

The previous prime is 516399941. The next prime is 516400019. The reversal of 516400004 is 400004615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90060100 + 426339904 = 9490^2 + 20648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410519 + ... + 411774.

It is an arithmetic number, because the mean of its divisors is an integer number (75788097).

Almost surely, 2^516400004 is an apocalyptic number.

It is an amenable number.

516400004 is a deficient number, since it is larger than the sum of its proper divisors (393057160).

516400004 is a wasteful number, since it uses less digits than its factorization.

516400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822454 (or 822452 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 516400004 is about 22724.4362746362. The cubic root of 516400004 is about 802.2851352313.

Adding to 516400004 its reverse (400004615), we get a palindrome (916404619).

The spelling of 516400004 in words is "five hundred sixteen million, four hundred thousand, four".