491939434 has 16 divisors (see below), whose sum is σ = 870529536. Its totient is φ = 204030000.

The previous prime is 491939417. The next prime is 491939447. The reversal of 491939434 is 434939194.

It is a happy 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, 566317 + ... + 567184.

It is an arithmetic number, because the mean of its divisors is an integer number (54408096).

Almost surely, 2^491939434 is an apocalyptic number.

491939434 is a deficient number, since it is larger than the sum of its proper divisors (378590102).

491939434 is a wasteful number, since it uses less digits than its factorization.

491939434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133541.

The product of its digits is 419904, while the sum is 46.

The square root of 491939434 is about 22179.7077077224. The cubic root of 491939434 is about 789.4122819930.

The spelling of 491939434 in words is "four hundred ninety-one million, nine hundred thirty-nine thousand, four hundred thirty-four".