15430139 has 2 divisors, whose sum is σ = 15430140. Its totient is φ = 15430138.

The previous prime is 15430111. The next prime is 15430153. The reversal of 15430139 is 93103451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15430139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15430159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7715069 + 7715070.

It is an arithmetic number, because the mean of its divisors is an integer number (7715070).

Almost surely, 2^15430139 is an apocalyptic number.

15430139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15430139 is an equidigital number, since it uses as much as digits as its factorization.

15430139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 15430139 is about 3928.1215612555. The cubic root of 15430139 is about 248.9563909156.

The spelling of 15430139 in words is "fifteen million, four hundred thirty thousand, one hundred thirty-nine".