149285839 has 2 divisors, whose sum is σ = 149285840. Its totient is φ = 149285838.

The previous prime is 149285779. The next prime is 149285867. The reversal of 149285839 is 938582941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149285839 - 2⁷ = 149285711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149285792 and 149285801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149289839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74642919 + 74642920.

It is an arithmetic number, because the mean of its divisors is an integer number (74642920).

Almost surely, 2^149285839 is an apocalyptic number.

149285839 is a deficient number, since it is larger than the sum of its proper divisors (1).

149285839 is an equidigital number, since it uses as much as digits as its factorization.

149285839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 149285839 is about 12218.2584274519. The cubic root of 149285839 is about 530.4847102470.

The spelling of 149285839 in words is "one hundred forty-nine million, two hundred eighty-five thousand, eight hundred thirty-nine".