70391413 has 2 divisors, whose sum is σ = 70391414. Its totient is φ = 70391412.

The previous prime is 70391393. The next prime is 70391417. The reversal of 70391413 is 31419307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53027524 + 17363889 = 7282^2 + 4167^2 .

It is a cyclic number.

It is not a de Polignac number, because 70391413 - 2¹³ = 70383221 is a prime.

It is equal to p_4139740 and since 70391413 and 4139740 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70391417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35195706 + 35195707.

It is an arithmetic number, because the mean of its divisors is an integer number (35195707).

Almost surely, 2^70391413 is an apocalyptic number.

It is an amenable number.

70391413 is a deficient number, since it is larger than the sum of its proper divisors (1).

70391413 is an equidigital number, since it uses as much as digits as its factorization.

70391413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 70391413 is about 8389.9590583030. The cubic root of 70391413 is about 412.8952572625.

The spelling of 70391413 in words is "seventy million, three hundred ninety-one thousand, four hundred thirteen".