449982643 has 16 divisors (see below), whose sum is σ = 517904640. Its totient is φ = 386661600.

The previous prime is 449982623. The next prime is 449982671. The reversal of 449982643 is 346289944.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449982643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449982613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99573 + ... + 103993.

It is an arithmetic number, because the mean of its divisors is an integer number (32369040).

Almost surely, 2^449982643 is an apocalyptic number.

449982643 is a deficient number, since it is larger than the sum of its proper divisors (67921997).

449982643 is a wasteful number, since it uses less digits than its factorization.

449982643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938.

The product of its digits is 1492992, while the sum is 49.

The square root of 449982643 is about 21212.7943232380. The cubic root of 449982643 is about 766.2995797981.

The spelling of 449982643 in words is "four hundred forty-nine million, nine hundred eighty-two thousand, six hundred forty-three".