449840139 has 12 divisors (see below), whose sum is σ = 697711464. Its totient is φ = 257051424.

The previous prime is 449840137. The next prime is 449840159. The reversal of 449840139 is 931048944.

It is not a de Polignac number, because 449840139 - 2¹ = 449840137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449840139.

It is not an unprimeable number, because it can be changed into a prime (449840137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1529922 + ... + 1530215.

It is an arithmetic number, because the mean of its divisors is an integer number (58142622).

Almost surely, 2^449840139 is an apocalyptic number.

449840139 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

449840139 is a deficient number, since it is larger than the sum of its proper divisors (247871325).

449840139 is a wasteful number, since it uses less digits than its factorization.

449840139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060154 (or 3060147 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 449840139 is about 21209.4351409933. The cubic root of 449840139 is about 766.2186786889.

The spelling of 449840139 in words is "four hundred forty-nine million, eight hundred forty thousand, one hundred thirty-nine".