449239137 has 4 divisors (see below), whose sum is σ = 598985520. Its totient is φ = 299492756.

The previous prime is 449239123. The next prime is 449239169. The reversal of 449239137 is 731932944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449239137 - 2¹⁰ = 449238113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449237137) 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, 74873187 + ... + 74873192.

It is an arithmetic number, because the mean of its divisors is an integer number (149746380).

Almost surely, 2^449239137 is an apocalyptic number.

It is an amenable number.

449239137 is a deficient number, since it is larger than the sum of its proper divisors (149746383).

449239137 is a wasteful number, since it uses less digits than its factorization.

449239137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149746382.

The product of its digits is 163296, while the sum is 42.

The square root of 449239137 is about 21195.2621356755. The cubic root of 449239137 is about 765.8772950494.

The spelling of 449239137 in words is "four hundred forty-nine million, two hundred thirty-nine thousand, one hundred thirty-seven".