449967273616 has 45 divisors (see below), whose sum is σ = 1014190512969. Its totient is φ = 192835067712.

The previous prime is 449967273611. The next prime is 449967273631. The reversal of 449967273616 is 616372769944.

The square root of 449967273616 is 670796.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 367308723600 + 82658550016 = 606060^2 + 287504^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449967273611) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18770310 + ... + 18794266.

Almost surely, 2^449967273616 is an apocalyptic number.

449967273616 is the 670796-th square number.

It is an amenable number.

449967273616 is an abundant number, since it is smaller than the sum of its proper divisors (564223239353).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449967273616 is an frugal number, since it uses more digits than its factorization.

449967273616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47936 (or 23966 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 64.

Multiplying 449967273616 by its sum of digits (64), we get a square (28797905511424 = 5366368²).

The spelling of 449967273616 in words is "four hundred forty-nine billion, nine hundred sixty-seven million, two hundred seventy-three thousand, six hundred sixteen".