455720939 has 2 divisors, whose sum is σ = 455720940. Its totient is φ = 455720938.

The previous prime is 455720911. The next prime is 455720953. The reversal of 455720939 is 939027554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455720939 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 455720939.

It is not a weakly prime, because it can be changed into another prime (455720959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227860469 + 227860470.

It is an arithmetic number, because the mean of its divisors is an integer number (227860470).

Almost surely, 2^455720939 is an apocalyptic number.

455720939 is a deficient number, since it is larger than the sum of its proper divisors (1).

455720939 is an equidigital number, since it uses as much as digits as its factorization.

455720939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 455720939 is about 21347.6213897474. The cubic root of 455720939 is about 769.5431815581.

The spelling of 455720939 in words is "four hundred fifty-five million, seven hundred twenty thousand, nine hundred thirty-nine".