15408139 has 2 divisors, whose sum is σ = 15408140. Its totient is φ = 15408138.

The previous prime is 15408121. The next prime is 15408143. The reversal of 15408139 is 93180451.

15408139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15408139 - 2¹³ = 15399947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15408139.

It is not a weakly prime, because it can be changed into another prime (15408109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7704069 + 7704070.

It is an arithmetic number, because the mean of its divisors is an integer number (7704070).

Almost surely, 2^15408139 is an apocalyptic number.

15408139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15408139 is an equidigital number, since it uses as much as digits as its factorization.

15408139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 15408139 is about 3925.3202417128. The cubic root of 15408139 is about 248.8380155360.

The spelling of 15408139 in words is "fifteen million, four hundred eight thousand, one hundred thirty-nine".