956409 has 16 divisors (see below), whose sum is σ = 1354752. Its totient is φ = 598928.

The previous prime is 956401. The next prime is 956429. The reversal of 956409 is 904659.

It is a happy number.

It is not a de Polignac number, because 956409 - 2³ = 956401 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 956409.

It is not an unprimeable number, because it can be changed into a prime (956401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5644 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2⁹⁵⁶⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

956409 is a deficient number, since it is larger than the sum of its proper divisors (398343).

956409 is a wasteful number, since it uses less digits than its factorization.

956409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 956409 is about 977.9616556900. The cubic root of 956409 is about 98.5253269580.

The spelling of 956409 in words is "nine hundred fifty-six thousand, four hundred nine".