149238389 has 2 divisors, whose sum is σ = 149238390. Its totient is φ = 149238388.

The previous prime is 149238367. The next prime is 149238403. The reversal of 149238389 is 983832941.

It is a happy number.

149238389 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 can be written as a sum of positive squares in only one way, i.e., 111661489 + 37576900 = 10567^2 + 6130^2 .

It is a cyclic number.

It is not a de Polignac number, because 149238389 - 2²⁰ = 148189813 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149238289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74619194 + 74619195.

It is an arithmetic number, because the mean of its divisors is an integer number (74619195).

Almost surely, 2^149238389 is an apocalyptic number.

It is an amenable number.

149238389 is a deficient number, since it is larger than the sum of its proper divisors (1).

149238389 is an equidigital number, since it uses as much as digits as its factorization.

149238389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 149238389 is about 12216.3165070327. The cubic root of 149238389 is about 530.4285000330.

The spelling of 149238389 in words is "one hundred forty-nine million, two hundred thirty-eight thousand, three hundred eighty-nine".