408274480729 has 4 divisors (see below), whose sum is σ = 414024825600. Its totient is φ = 402524135860.

The previous prime is 408274480723. The next prime is 408274480751. The reversal of 408274480729 is 927084472804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 408274480729 - 2¹¹ = 408274478681 is a prime.

It is a super-2 number, since 2×408274480729² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408274480729.

It is not an unprimeable number, because it can be changed into a prime (408274480723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2875172329 + ... + 2875172470.

It is an arithmetic number, because the mean of its divisors is an integer number (103506206400).

Almost surely, 2^408274480729 is an apocalyptic number.

It is an amenable number.

408274480729 is a deficient number, since it is larger than the sum of its proper divisors (5750344871).

408274480729 is an equidigital number, since it uses as much as digits as its factorization.

408274480729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750344870.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 408274480729 in words is "four hundred eight billion, two hundred seventy-four million, four hundred eighty thousand, seven hundred twenty-nine".