449954993 has 2 divisors, whose sum is σ = 449954994. Its totient is φ = 449954992.

The previous prime is 449954977. The next prime is 449955029. The reversal of 449954993 is 399459944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412414864 + 37540129 = 20308^2 + 6127^2 .

It is a cyclic number.

It is not a de Polignac number, because 449954993 - 2⁴ = 449954977 is a prime.

It is not a weakly prime, because it can be changed into another prime (449954093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224977496 + 224977497.

It is an arithmetic number, because the mean of its divisors is an integer number (224977497).

Almost surely, 2^449954993 is an apocalyptic number.

It is an amenable number.

449954993 is a deficient number, since it is larger than the sum of its proper divisors (1).

449954993 is an equidigital number, since it uses as much as digits as its factorization.

449954993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The square root of 449954993 is about 21212.1425839070. The cubic root of 449954993 is about 766.2838839206.

The spelling of 449954993 in words is "four hundred forty-nine million, nine hundred fifty-four thousand, nine hundred ninety-three".