449185906172 has 12 divisors (see below), whose sum is σ = 786090449760. Its totient is φ = 224588634816.

The previous prime is 449185906163. The next prime is 449185906201. The reversal of 449185906172 is 271609581944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839597 + ... + 1266212.

It is an arithmetic number, because the mean of its divisors is an integer number (65507537480).

Almost surely, 2^449185906172 is an apocalyptic number.

It is an amenable number.

449185906172 is a deficient number, since it is larger than the sum of its proper divisors (336904543588).

449185906172 is a wasteful number, since it uses less digits than its factorization.

449185906172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159140 (or 2159138 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 449185906172 in words is "four hundred forty-nine billion, one hundred eighty-five million, nine hundred six thousand, one hundred seventy-two".