449677521 has 8 divisors (see below), whose sum is σ = 666188960. Its totient is φ = 299784996.

The previous prime is 449677517. The next prime is 449677589. The reversal of 449677521 is 125776944.

It is not a de Polignac number, because 449677521 - 2² = 449677517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449677721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8327335 + ... + 8327388.

It is an arithmetic number, because the mean of its divisors is an integer number (83273620).

Almost surely, 2^449677521 is an apocalyptic number.

It is an amenable number.

449677521 is a deficient number, since it is larger than the sum of its proper divisors (216511439).

449677521 is a wasteful number, since it uses less digits than its factorization.

449677521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16654732 (or 16654726 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 449677521 is about 21205.6011704455. The cubic root of 449677521 is about 766.1263377617.

The spelling of 449677521 in words is "four hundred forty-nine million, six hundred seventy-seven thousand, five hundred twenty-one".