6249955139 has 2 divisors, whose sum is σ = 6249955140. Its totient is φ = 6249955138.

The previous prime is 6249955087. The next prime is 6249955147. The reversal of 6249955139 is 9315599426.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6249955139 is a prime.

It is not a weakly prime, because it can be changed into another prime (6249955189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124977569 + 3124977570.

It is an arithmetic number, because the mean of its divisors is an integer number (3124977570).

Almost surely, 2^6249955139 is an apocalyptic number.

6249955139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6249955139 is an equidigital number, since it uses as much as digits as its factorization.

6249955139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 53.

The square root of 6249955139 is about 79056.6577778241. The cubic root of 6249955139 is about 1842.0113421273.

The spelling of 6249955139 in words is "six billion, two hundred forty-nine million, nine hundred fifty-five thousand, one hundred thirty-nine".