449238973 has 2 divisors, whose sum is σ = 449238974. Its totient is φ = 449238972.

The previous prime is 449238943. The next prime is 449238989. The reversal of 449238973 is 379832944.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443607844 + 5631129 = 21062^2 + 2373^2 .

It is a cyclic number.

It is not a de Polignac number, because 449238973 - 2¹³ = 449230781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449238943) 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 as a sum of consecutive naturals, namely, 224619486 + 224619487.

It is an arithmetic number, because the mean of its divisors is an integer number (224619487).

Almost surely, 2^449238973 is an apocalyptic number.

It is an amenable number.

449238973 is a deficient number, since it is larger than the sum of its proper divisors (1).

449238973 is an equidigital number, since it uses as much as digits as its factorization.

449238973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The square root of 449238973 is about 21195.2582668860. The cubic root of 449238973 is about 765.8772018519.

The spelling of 449238973 in words is "four hundred forty-nine million, two hundred thirty-eight thousand, nine hundred seventy-three".