491434446 has 16 divisors (see below), whose sum is σ = 1006841808. Its totient is φ = 159816000.

The previous prime is 491434439. The next prime is 491434469. The reversal of 491434446 is 644434194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998605 + ... + 999096.

It is an arithmetic number, because the mean of its divisors is an integer number (62927613).

Almost surely, 2^491434446 is an apocalyptic number.

491434446 is an abundant number, since it is smaller than the sum of its proper divisors (515407362).

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

491434446 is a wasteful number, since it uses less digits than its factorization.

491434446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997747.

The product of its digits is 165888, while the sum is 39.

The square root of 491434446 is about 22168.3207753767. The cubic root of 491434446 is about 789.1420724336.

The spelling of 491434446 in words is "four hundred ninety-one million, four hundred thirty-four thousand, four hundred forty-six".