709141309 has 2 divisors, whose sum is σ = 709141310. Its totient is φ = 709141308.

The previous prime is 709141273. The next prime is 709141343. The reversal of 709141309 is 903141907.

It is an a-pointer prime, because the next prime (709141343) can be obtained adding 709141309 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694164409 + 14976900 = 26347^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 709141309 - 2¹⁵ = 709108541 is a prime.

It is a super-2 number, since 2×709141309² = 1005762792260466962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709141369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354570654 + 354570655.

It is an arithmetic number, because the mean of its divisors is an integer number (354570655).

Almost surely, 2^709141309 is an apocalyptic number.

It is an amenable number.

709141309 is a deficient number, since it is larger than the sum of its proper divisors (1).

709141309 is an equidigital number, since it uses as much as digits as its factorization.

709141309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 709141309 is about 26629.7072646321. The cubic root of 709141309 is about 891.7523480984.

It can be divided in two parts, 7091 and 41309, that added together give a square (48400 = 220²).

The spelling of 709141309 in words is "seven hundred nine million, one hundred forty-one thousand, three hundred nine".