712221539 has 2 divisors, whose sum is σ = 712221540. Its totient is φ = 712221538.

The previous prime is 712221533. The next prime is 712221541. The reversal of 712221539 is 935122217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 712221539 - 2²⁰ = 711172963 is a prime.

It is a Sophie Germain prime.

Together with 712221541, 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 (712221533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356110769 + 356110770.

It is an arithmetic number, because the mean of its divisors is an integer number (356110770).

Almost surely, 2^712221539 is an apocalyptic number.

712221539 is a deficient number, since it is larger than the sum of its proper divisors (1).

712221539 is an equidigital number, since it uses as much as digits as its factorization.

712221539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 712221539 is about 26687.4790679075. The cubic root of 712221539 is about 893.0416232923.

The spelling of 712221539 in words is "seven hundred twelve million, two hundred twenty-one thousand, five hundred thirty-nine".