408312054049 has 3 divisors (see below), whose sum is σ = 408312693043. Its totient is φ = 408311415056.

The previous prime is 408312054047. The next prime is 408312054061. The reversal of 408312054049 is 940450213804.

The square root of 408312054049 is 638993.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 94676213025 + 313635841024 = 307695^2 + 560032^2 .

It is not a de Polignac number, because 408312054049 - 2¹ = 408312054047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408312054041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 319497 + ... + 958489.

Almost surely, 2^408312054049 is an apocalyptic number.

408312054049 is the 638993-rd square number.

408312054049 is the 319497-th centered octagonal number.

It is an amenable number.

408312054049 is a deficient number, since it is larger than the sum of its proper divisors (638994).

408312054049 is an frugal number, since it uses more digits than its factorization.

408312054049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277986 (or 638993 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 408312054049 in words is "four hundred eight billion, three hundred twelve million, fifty-four thousand, forty-nine".