641049079 has 4 divisors (see below), whose sum is σ = 699326280. Its totient is φ = 582771880.

The previous prime is 641049067. The next prime is 641049103. The reversal of 641049079 is 970940146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641049079 - 2⁵ = 641049047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641049029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29138584 + ... + 29138605.

It is an arithmetic number, because the mean of its divisors is an integer number (174831570).

Almost surely, 2^641049079 is an apocalyptic number.

641049079 is a deficient number, since it is larger than the sum of its proper divisors (58277201).

641049079 is a wasteful number, since it uses less digits than its factorization.

641049079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58277200.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 641049079 is about 25318.9470357675. The cubic root of 641049079 is about 862.2444881724.

The spelling of 641049079 in words is "six hundred forty-one million, forty-nine thousand, seventy-nine".