93870913 has 2 divisors, whose sum is σ = 93870914. Its totient is φ = 93870912.

The previous prime is 93870901. The next prime is 93870929. The reversal of 93870913 is 31907839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93470224 + 400689 = 9668^2 + 633^2 .

It is an emirp because it is prime and its reverse (31907839) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93870913 - 2¹³ = 93862721 is a prime.

It is not a weakly prime, because it can be changed into another prime (93870943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46935456 + 46935457.

It is an arithmetic number, because the mean of its divisors is an integer number (46935457).

Almost surely, 2^93870913 is an apocalyptic number.

It is an amenable number.

93870913 is a deficient number, since it is larger than the sum of its proper divisors (1).

93870913 is an equidigital number, since it uses as much as digits as its factorization.

93870913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 93870913 is about 9688.7002740306. The cubic root of 93870913 is about 454.4753651967.

The spelling of 93870913 in words is "ninety-three million, eight hundred seventy thousand, nine hundred thirteen".