641219499 has 6 divisors (see below), whose sum is σ = 926205956. Its totient is φ = 427479660.

The previous prime is 641219479. The next prime is 641219503. The reversal of 641219499 is 994912146.

It is not a de Polignac number, because 641219499 - 2¹² = 641215403 is a prime.

It is a super-2 number, since 2×641219499² = 822324891795622002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641219479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35623297 + ... + 35623314.

Almost surely, 2^641219499 is an apocalyptic number.

641219499 is a deficient number, since it is larger than the sum of its proper divisors (284986457).

641219499 is a wasteful number, since it uses less digits than its factorization.

641219499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71246617 (or 71246614 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 641219499 is about 25322.3122759356. The cubic root of 641219499 is about 862.3208893357.

The spelling of 641219499 in words is "six hundred forty-one million, two hundred nineteen thousand, four hundred ninety-nine".