449999993 has 2 divisors, whose sum is σ = 449999994. Its totient is φ = 449999992.

The previous prime is 449999987. The next prime is 450000007. The reversal of 449999993 is 399999944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442176784 + 7823209 = 21028^2 + 2797^2 .

It is a cyclic number.

It is not a de Polignac number, because 449999993 - 2¹⁴ = 449983609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449999593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224999996 + 224999997.

It is an arithmetic number, because the mean of its divisors is an integer number (224999997).

Almost surely, 2^449999993 is an apocalyptic number.

It is an amenable number.

449999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

449999993 is an equidigital number, since it uses as much as digits as its factorization.

449999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25509168, while the sum is 65.

The square root of 449999993 is about 21213.2032706048. The cubic root of 449999993 is about 766.3094284201.

The spelling of 449999993 in words is "four hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-three".