408487165 has 16 divisors (see below), whose sum is σ = 500674608. Its totient is φ = 319827456.

The previous prime is 408487147. The next prime is 408487187. The reversal of 408487165 is 561784804.

It can be written as a sum of positive squares in 8 ways, for example, as 126045529 + 282441636 = 11227^2 + 16806^2 .

It is a cyclic number.

It is not a de Polignac number, because 408487165 - 2⁵ = 408487133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119419 + ... + 122791.

It is an arithmetic number, because the mean of its divisors is an integer number (31292163).

Almost surely, 2^408487165 is an apocalyptic number.

It is an amenable number.

408487165 is a deficient number, since it is larger than the sum of its proper divisors (92187443).

408487165 is a wasteful number, since it uses less digits than its factorization.

408487165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 408487165 is about 20211.0654098194. The cubic root of 408487165 is about 741.9810353258.

The spelling of 408487165 in words is "four hundred eight million, four hundred eighty-seven thousand, one hundred sixty-five".