70009397 has 2 divisors, whose sum is σ = 70009398. Its totient is φ = 70009396.

The previous prime is 70009363. The next prime is 70009403. The reversal of 70009397 is 79390007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 15928081 = 7354^2 + 3991^2 .

It is a cyclic number.

It is not a de Polignac number, because 70009397 - 2⁶ = 70009333 is a prime.

It is a super-3 number, since 3×70009397³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70009307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35004698 + 35004699.

It is an arithmetic number, because the mean of its divisors is an integer number (35004699).

Almost surely, 2^70009397 is an apocalyptic number.

It is an amenable number.

70009397 is a deficient number, since it is larger than the sum of its proper divisors (1).

70009397 is an equidigital number, since it uses as much as digits as its factorization.

70009397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 70009397 is about 8367.1618246572. The cubic root of 70009397 is about 412.1469709262.

The spelling of 70009397 in words is "seventy million, nine thousand, three hundred ninety-seven".