449081619539 has 6 divisors (see below), whose sum is σ = 522401067684. Its totient is φ = 384927102420.

The previous prime is 449081619533. The next prime is 449081619563. The reversal of 449081619539 is 935916180944.

It is a de Polignac number, because none of the positive numbers 2^k-449081619539 is a prime.

It is a super-2 number, since 2×449081619539² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449081619533) 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, 4582465457 + ... + 4582465554.

It is an arithmetic number, because the mean of its divisors is an integer number (87066844614).

Almost surely, 2^449081619539 is an apocalyptic number.

449081619539 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

449081619539 is a deficient number, since it is larger than the sum of its proper divisors (73319448145).

449081619539 is an equidigital number, since it uses as much as digits as its factorization.

449081619539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164931025 (or 9164931018 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 449081619539 in words is "four hundred forty-nine billion, eighty-one million, six hundred nineteen thousand, five hundred thirty-nine".