409626 has 24 divisors (see below), whose sum is σ = 1014624. Its totient is φ = 117000.

The previous prime is 409609. The next prime is 409639. The reversal of 409626 is 626904.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 409626.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1500 + ... + 1751.

It is an arithmetic number, because the mean of its divisors is an integer number (42276).

2⁴⁰⁹⁶²⁶ is an apocalyptic number.

409626 is an abundant number, since it is smaller than the sum of its proper divisors (604998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409626 is a wasteful number, since it uses less digits than its factorization.

409626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 409626 is about 640.0203121777. The cubic root of 409626 is about 74.2669926758.

It can be divided in two parts, 409 and 626, that added together give a triangular number (1035 = T₄₅).

The spelling of 409626 in words is "four hundred nine thousand, six hundred twenty-six".