724022939 has 2 divisors, whose sum is σ = 724022940. Its totient is φ = 724022938.

The previous prime is 724022933. The next prime is 724022941. The reversal of 724022939 is 939220427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724022939 is a prime.

Together with 724022941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (724022933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362011469 + 362011470.

It is an arithmetic number, because the mean of its divisors is an integer number (362011470).

Almost surely, 2^724022939 is an apocalyptic number.

724022939 is a deficient number, since it is larger than the sum of its proper divisors (1).

724022939 is an equidigital number, since it uses as much as digits as its factorization.

724022939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 724022939 is about 26907.6743513816. The cubic root of 724022939 is about 897.9471478626.

The spelling of 724022939 in words is "seven hundred twenty-four million, twenty-two thousand, nine hundred thirty-nine".