83388139 has 2 divisors, whose sum is σ = 83388140. Its totient is φ = 83388138.

The previous prime is 83388127. The next prime is 83388143. The reversal of 83388139 is 93188338.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83388139 - 2²³ = 74999531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83388095 and 83388104.

It is not a weakly prime, because it can be changed into another prime (83358139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41694069 + 41694070.

It is an arithmetic number, because the mean of its divisors is an integer number (41694070).

Almost surely, 2^83388139 is an apocalyptic number.

83388139 is a deficient number, since it is larger than the sum of its proper divisors (1).

83388139 is an equidigital number, since it uses as much as digits as its factorization.

83388139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 83388139 is about 9131.7106283544. The cubic root of 83388139 is about 436.8859657038.

The spelling of 83388139 in words is "eighty-three million, three hundred eighty-eight thousand, one hundred thirty-nine".