93139789 has 2 divisors, whose sum is σ = 93139790. Its totient is φ = 93139788.

The previous prime is 93139777. The next prime is 93139801. The reversal of 93139789 is 98793139.

It is a balanced prime because it is at equal distance from previous prime (93139777) and next prime (93139801).

It can be written as a sum of positive squares in only one way, i.e., 78623689 + 14516100 = 8867^2 + 3810^2 .

It is an emirp because it is prime and its reverse (98793139) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93139789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93139769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46569894 + 46569895.

It is an arithmetic number, because the mean of its divisors is an integer number (46569895).

Almost surely, 2^93139789 is an apocalyptic number.

It is an amenable number.

93139789 is a deficient number, since it is larger than the sum of its proper divisors (1).

93139789 is an equidigital number, since it uses as much as digits as its factorization.

93139789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 93139789 is about 9650.8957615343. The cubic root of 93139789 is about 453.2923780163.

The spelling of 93139789 in words is "ninety-three million, one hundred thirty-nine thousand, seven hundred eighty-nine".