809490342 has 16 divisors (see below), whose sum is σ = 1619702640. Its totient is φ = 269709792.

The previous prime is 809490337. The next prime is 809490349. The reversal of 809490342 is 243094908.

It is a super-2 number, since 2×809490342² = 1310549227582553928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 809490342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809490349) 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, 14917 + ... + 42912.

It is an arithmetic number, because the mean of its divisors is an integer number (101231415).

Almost surely, 2^809490342 is an apocalyptic number.

809490342 is an abundant number, since it is smaller than the sum of its proper divisors (810212298).

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

809490342 is a wasteful number, since it uses less digits than its factorization.

809490342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60167.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 809490342 is about 28451.5437542500. The cubic root of 809490342 is about 931.9742013956.

The spelling of 809490342 in words is "eight hundred nine million, four hundred ninety thousand, three hundred forty-two".