449837007921 has 64 divisors (see below), whose sum is σ = 771124838400. Its totient is φ = 253847392128.

The previous prime is 449837007911. The next prime is 449837007929. The reversal of 449837007921 is 129700738944.

It is not a de Polignac number, because 449837007921 - 2⁷ = 449837007793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449837007929) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52688365 + ... + 52696901.

It is an arithmetic number, because the mean of its divisors is an integer number (12048825600).

Almost surely, 2^449837007921 is an apocalyptic number.

It is an amenable number.

449837007921 is a deficient number, since it is larger than the sum of its proper divisors (321287830479).

449837007921 is a wasteful number, since it uses less digits than its factorization.

449837007921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995 (or 11989 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 449837007921 in words is "four hundred forty-nine billion, eight hundred thirty-seven million, seven thousand, nine hundred twenty-one".