34870309 has 2 divisors, whose sum is σ = 34870310. Its totient is φ = 34870308.

The previous prime is 34870307. The next prime is 34870313. The reversal of 34870309 is 90307843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28058209 + 6812100 = 5297^2 + 2610^2 .

It is an emirp because it is prime and its reverse (90307843) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34870309 - 2¹ = 34870307 is a prime.

Together with 34870307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34870307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17435154 + 17435155.

It is an arithmetic number, because the mean of its divisors is an integer number (17435155).

Almost surely, 2^34870309 is an apocalyptic number.

It is an amenable number.

34870309 is a deficient number, since it is larger than the sum of its proper divisors (1).

34870309 is an equidigital number, since it uses as much as digits as its factorization.

34870309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 34870309 is about 5905.1087204217. The cubic root of 34870309 is about 326.7021044205.

The spelling of 34870309 in words is "thirty-four million, eight hundred seventy thousand, three hundred nine".