408965 has 8 divisors (see below), whose sum is σ = 494208. Its totient is φ = 324880.

The previous prime is 408959. The next prime is 408971. The reversal of 408965 is 569804.

It is an interprime number because it is at equal distance from previous prime (408959) and next prime (408971).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-408965 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408965.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160 + ... + 1470.

It is an arithmetic number, because the mean of its divisors is an integer number (61776).

2⁴⁰⁸⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

408965 is a deficient number, since it is larger than the sum of its proper divisors (85243).

408965 is a wasteful number, since it uses less digits than its factorization.

408965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 408965 is about 639.5037138282. The cubic root of 408965 is about 74.2270237683.

It can be divided in two parts, 40896 and 5, that multiplied together give a triangular number (204480 = T₆₃₉).

The spelling of 408965 in words is "four hundred eight thousand, nine hundred sixty-five".