409722 has 16 divisors (see below), whose sum is σ = 855360. Its totient is φ = 130592.

The previous prime is 409711. The next prime is 409723. The reversal of 409722 is 227904.

It is a junction number, because it is equal to n+sod(n) for n = 409692 and 409701.

It is not an unprimeable number, because it can be changed into a prime (409723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347 + ... + 1622.

It is an arithmetic number, because the mean of its divisors is an integer number (53460).

2⁴⁰⁹⁷²² is an apocalyptic number.

409722 is an abundant number, since it is smaller than the sum of its proper divisors (445638).

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

409722 is a wasteful number, since it uses less digits than its factorization.

409722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 409722 is about 640.0953054038. The cubic root of 409722 is about 74.2727939631.

The spelling of 409722 in words is "four hundred nine thousand, seven hundred twenty-two".