441157439491 has 4 divisors (see below), whose sum is σ = 451416914872. Its totient is φ = 430897964112.

The previous prime is 441157439467. The next prime is 441157439521. The reversal of 441157439491 is 194934751144.

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 441157439491 - 2²⁷ = 441023221763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441157439291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129737626 + ... + 5129737711.

It is an arithmetic number, because the mean of its divisors is an integer number (112854228718).

Almost surely, 2^441157439491 is an apocalyptic number.

441157439491 is a deficient number, since it is larger than the sum of its proper divisors (10259475381).

441157439491 is a wasteful number, since it uses less digits than its factorization.

441157439491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259475380.

The product of its digits is 2177280, while the sum is 52.

The spelling of 441157439491 in words is "four hundred forty-one billion, one hundred fifty-seven million, four hundred thirty-nine thousand, four hundred ninety-one".