709220539 has 2 divisors, whose sum is σ = 709220540. Its totient is φ = 709220538.

The previous prime is 709220537. The next prime is 709220579. The reversal of 709220539 is 935022907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 709220539 - 2¹ = 709220537 is a prime.

Together with 709220537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 709220498 and 709220507.

It is not a weakly prime, because it can be changed into another prime (709220537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354610269 + 354610270.

It is an arithmetic number, because the mean of its divisors is an integer number (354610270).

Almost surely, 2^709220539 is an apocalyptic number.

709220539 is a deficient number, since it is larger than the sum of its proper divisors (1).

709220539 is an equidigital number, since it uses as much as digits as its factorization.

709220539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 709220539 is about 26631.1948473965. The cubic root of 709220539 is about 891.7855577030.

The spelling of 709220539 in words is "seven hundred nine million, two hundred twenty thousand, five hundred thirty-nine".