409346599204 has 9 divisors (see below), whose sum is σ = 716358787921. Its totient is φ = 204672659800.

The previous prime is 409346599187. The next prime is 409346599229. The reversal of 409346599204 is 402995643904.

It is a happy number.

The square root of 409346599204 is 639802.

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

It can be written as a sum of positive squares in only one way, i.e., 405893861604 + 3452737600 = 637098^2 + 58760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1119654 + ... + 1439554.

Almost surely, 2^409346599204 is an apocalyptic number.

409346599204 is the 639802-nd square number.

It is an amenable number.

409346599204 is a deficient number, since it is larger than the sum of its proper divisors (307012188717).

409346599204 is an frugal number, since it uses more digits than its factorization.

409346599204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639806 (or 319903 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 409346599204 in words is "four hundred nine billion, three hundred forty-six million, five hundred ninety-nine thousand, two hundred four".