409720632 has 16 divisors (see below), whose sum is σ = 1024301640. Its totient is φ = 136573536.

The previous prime is 409720631. The next prime is 409720679. The reversal of 409720632 is 236027904.

It is a junction number, because it is equal to n+sod(n) for n = 409720593 and 409720602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409720631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8535823 + ... + 8535870.

Almost surely, 2^409720632 is an apocalyptic number.

It is an amenable number.

409720632 is an abundant number, since it is smaller than the sum of its proper divisors (614581008).

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

409720632 is a wasteful number, since it uses less digits than its factorization.

409720632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17071702 (or 17071698 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 409720632 is about 20241.5570547327. The cubic root of 409720632 is about 742.7271130115.

The spelling of 409720632 in words is "four hundred nine million, seven hundred twenty thousand, six hundred thirty-two".