70259909 has 2 divisors, whose sum is σ = 70259910. Its totient is φ = 70259908.

The previous prime is 70259887. The next prime is 70259921. The reversal of 70259909 is 90995207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38167684 + 32092225 = 6178^2 + 5665^2 .

It is a cyclic number.

It is not a de Polignac number, because 70259909 - 2¹⁶ = 70194373 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 (70259939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35129954 + 35129955.

It is an arithmetic number, because the mean of its divisors is an integer number (35129955).

Almost surely, 2^70259909 is an apocalyptic number.

It is an amenable number.

70259909 is a deficient number, since it is larger than the sum of its proper divisors (1).

70259909 is an equidigital number, since it uses as much as digits as its factorization.

70259909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 70259909 is about 8382.1184076581. The cubic root of 70259909 is about 412.6379757599.

The spelling of 70259909 in words is "seventy million, two hundred fifty-nine thousand, nine hundred nine".