641289934 has 16 divisors (see below), whose sum is σ = 997506720. Its totient is φ = 308841120.

The previous prime is 641289931. The next prime is 641289941. The reversal of 641289934 is 439982146.

It is a super-2 number, since 2×641289934² = 822505558899448712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641289931) 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, 11287 + ... + 37549.

It is an arithmetic number, because the mean of its divisors is an integer number (62344170).

Almost surely, 2^641289934 is an apocalyptic number.

641289934 is a deficient number, since it is larger than the sum of its proper divisors (356216786).

641289934 is a wasteful number, since it uses less digits than its factorization.

641289934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26715.

The product of its digits is 373248, while the sum is 46.

The square root of 641289934 is about 25323.7030072618. The cubic root of 641289934 is about 862.3524621685.

The spelling of 641289934 in words is "six hundred forty-one million, two hundred eighty-nine thousand, nine hundred thirty-four".