98938139 has 2 divisors, whose sum is σ = 98938140. Its totient is φ = 98938138.

The previous prime is 98938123. The next prime is 98938171. The reversal of 98938139 is 93183989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98938139 - 2⁴ = 98938123 is a prime.

It is not a weakly prime, because it can be changed into another prime (98938109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49469069 + 49469070.

It is an arithmetic number, because the mean of its divisors is an integer number (49469070).

Almost surely, 2^98938139 is an apocalyptic number.

98938139 is a deficient number, since it is larger than the sum of its proper divisors (1).

98938139 is an equidigital number, since it uses as much as digits as its factorization.

98938139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 50.

The square root of 98938139 is about 9946.7652530861. The cubic root of 98938139 is about 462.5101262940.

The spelling of 98938139 in words is "ninety-eight million, nine hundred thirty-eight thousand, one hundred thirty-nine".