408797855 has 4 divisors (see below), whose sum is σ = 490557432. Its totient is φ = 327038280.

The previous prime is 408797819. The next prime is 408797923. The reversal of 408797855 is 558797804.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-408797855 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 408797797 and 408797806.

It is a congruent number.

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, 40879781 + ... + 40879790.

It is an arithmetic number, because the mean of its divisors is an integer number (122639358).

Almost surely, 2^408797855 is an apocalyptic number.

408797855 is a deficient number, since it is larger than the sum of its proper divisors (81759577).

408797855 is an equidigital number, since it uses as much as digits as its factorization.

408797855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81759576.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The square root of 408797855 is about 20218.7500850077. The cubic root of 408797855 is about 742.1691013470.

The spelling of 408797855 in words is "four hundred eight million, seven hundred ninety-seven thousand, eight hundred fifty-five".