149928239 has 2 divisors, whose sum is σ = 149928240. Its totient is φ = 149928238.

The previous prime is 149928227. The next prime is 149928271. The reversal of 149928239 is 932829941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149928239 - 2⁴ = 149928223 is a prime.

It is a super-2 number, since 2×149928239² = 44956953699282242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149928193 and 149928202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149928209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74964119 + 74964120.

It is an arithmetic number, because the mean of its divisors is an integer number (74964120).

Almost surely, 2^149928239 is an apocalyptic number.

149928239 is a deficient number, since it is larger than the sum of its proper divisors (1).

149928239 is an equidigital number, since it uses as much as digits as its factorization.

149928239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 47.

The square root of 149928239 is about 12244.5187328862. The cubic root of 149928239 is about 531.2445405852.

The spelling of 149928239 in words is "one hundred forty-nine million, nine hundred twenty-eight thousand, two hundred thirty-nine".