449472861 has 8 divisors (see below), whose sum is σ = 665885760. Its totient is φ = 299648556.

The previous prime is 449472853. The next prime is 449472869. The reversal of 449472861 is 168274944.

It is an interprime number because it is at equal distance from previous prime (449472853) and next prime (449472869).

It is not a de Polignac number, because 449472861 - 2³ = 449472853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449472869) 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, 8323545 + ... + 8323598.

It is an arithmetic number, because the mean of its divisors is an integer number (83235720).

Almost surely, 2^449472861 is an apocalyptic number.

It is an amenable number.

449472861 is a deficient number, since it is larger than the sum of its proper divisors (216412899).

449472861 is a wasteful number, since it uses less digits than its factorization.

449472861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16647152 (or 16647146 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 449472861 is about 21200.7750094189. The cubic root of 449472861 is about 766.0100920803.

The spelling of 449472861 in words is "four hundred forty-nine million, four hundred seventy-two thousand, eight hundred sixty-one".