7421311739 has 2 divisors, whose sum is σ = 7421311740. Its totient is φ = 7421311738.

The previous prime is 7421311691. The next prime is 7421311747. The reversal of 7421311739 is 9371131247.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421311739 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (7421311939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710655869 + 3710655870.

It is an arithmetic number, because the mean of its divisors is an integer number (3710655870).

Almost surely, 2^7421311739 is an apocalyptic number.

7421311739 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421311739 is an equidigital number, since it uses as much as digits as its factorization.

7421311739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 7421311739 is about 86147.0355787127. The cubic root of 7421311739 is about 1950.5640918127.

The spelling of 7421311739 in words is "seven billion, four hundred twenty-one million, three hundred eleven thousand, seven hundred thirty-nine".