641209484 has 12 divisors (see below), whose sum is σ = 1132604424. Its totient is φ = 317608224.

The previous prime is 641209477. The next prime is 641209493. The reversal of 641209484 is 484902146.

It is a super-2 number, since 2×641209484² = 822299204743092512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748649 + ... + 749504.

It is an arithmetic number, because the mean of its divisors is an integer number (94383702).

Almost surely, 2^641209484 is an apocalyptic number.

It is an amenable number.

641209484 is a deficient number, since it is larger than the sum of its proper divisors (491394940).

641209484 is a wasteful number, since it uses less digits than its factorization.

641209484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498264 (or 1498262 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 641209484 is about 25322.1145246601. The cubic root of 641209484 is about 862.3163998753.

The spelling of 641209484 in words is "six hundred forty-one million, two hundred nine thousand, four hundred eighty-four".