93138949 has 2 divisors, whose sum is σ = 93138950. Its totient is φ = 93138948.

The previous prime is 93138943. The next prime is 93138959. The reversal of 93138949 is 94983139.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 38526849 = 7390^2 + 6207^2 .

It is an emirp because it is prime and its reverse (94983139) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93138949 - 2⁵ = 93138917 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 93138899 and 93138908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93138943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46569474 + 46569475.

It is an arithmetic number, because the mean of its divisors is an integer number (46569475).

Almost surely, 2^93138949 is an apocalyptic number.

It is an amenable number.

93138949 is a deficient number, since it is larger than the sum of its proper divisors (1).

93138949 is an equidigital number, since it uses as much as digits as its factorization.

93138949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 93138949 is about 9650.8522421598. The cubic root of 93138949 is about 453.2910153092.

The spelling of 93138949 in words is "ninety-three million, one hundred thirty-eight thousand, nine hundred forty-nine".