70004309 has 2 divisors, whose sum is σ = 70004310. Its totient is φ = 70004308.

The previous prime is 70004287. The next prime is 70004321. The reversal of 70004309 is 90340007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 14799409 = 7430^2 + 3847^2 .

It is an emirp because it is prime and its reverse (90340007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70004309 - 2¹² = 70000213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70004359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35002154 + 35002155.

It is an arithmetic number, because the mean of its divisors is an integer number (35002155).

Almost surely, 2^70004309 is an apocalyptic number.

It is an amenable number.

70004309 is a deficient number, since it is larger than the sum of its proper divisors (1).

70004309 is an equidigital number, since it uses as much as digits as its factorization.

70004309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 70004309 is about 8366.8577733818. The cubic root of 70004309 is about 412.1369862923.

The spelling of 70004309 in words is "seventy million, four thousand, three hundred nine".