449678945 has 16 divisors (see below), whose sum is σ = 559603200. Its totient is φ = 346607424.

The previous prime is 449678927. The next prime is 449678953. The reversal of 449678945 is 549876944.

It is a cyclic number.

It is not a de Polignac number, because 449678945 - 2⁶ = 449678881 is a prime.

It is a super-2 number, since 2×449678945² = 404422307152626050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7256 + ... + 30854.

It is an arithmetic number, because the mean of its divisors is an integer number (34975200).

Almost surely, 2^449678945 is an apocalyptic number.

It is an amenable number.

449678945 is a deficient number, since it is larger than the sum of its proper divisors (109924255).

449678945 is a wasteful number, since it uses less digits than its factorization.

449678945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23744.

The product of its digits is 8709120, while the sum is 56.

The square root of 449678945 is about 21205.6347464536. The cubic root of 449678945 is about 766.1271464618.

The spelling of 449678945 in words is "four hundred forty-nine million, six hundred seventy-eight thousand, nine hundred forty-five".