449246574981 has 24 divisors (see below), whose sum is σ = 664468170080. Its totient is φ = 292327582176.

The previous prime is 449246574967. The next prime is 449246575007. The reversal of 449246574981 is 189475642944.

449246574981 is a `hidden beast` number, since 4 + 4 + 92 + 4 + 6 + 57 + 498 + 1 = 666.

It is not a de Polignac number, because 449246574981 - 2¹³ = 449246566789 is a prime.

It is a super-2 number, since 2×449246574981² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449246574911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146850 + ... + 959196.

Almost surely, 2^449246574981 is an apocalyptic number.

It is an amenable number.

449246574981 is a deficient number, since it is larger than the sum of its proper divisors (215221595099).

449246574981 is a wasteful number, since it uses less digits than its factorization.

449246574981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813825 (or 813822 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 449246574981 in words is "four hundred forty-nine billion, two hundred forty-six million, five hundred seventy-four thousand, nine hundred eighty-one".