70393391 has 2 divisors, whose sum is σ = 70393392. Its totient is φ = 70393390.

The previous prime is 70393373. The next prime is 70393397. The reversal of 70393391 is 19339307.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70393391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70393397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35196695 + 35196696.

It is an arithmetic number, because the mean of its divisors is an integer number (35196696).

Almost surely, 2^70393391 is an apocalyptic number.

70393391 is a deficient number, since it is larger than the sum of its proper divisors (1).

70393391 is an equidigital number, since it uses as much as digits as its factorization.

70393391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 70393391 is about 8390.0769364768. The cubic root of 70393391 is about 412.8991246811.

The spelling of 70393391 in words is "seventy million, three hundred ninety-three thousand, three hundred ninety-one".