149255387 has 2 divisors, whose sum is σ = 149255388. Its totient is φ = 149255386.

The previous prime is 149255377. The next prime is 149255389. The reversal of 149255387 is 783552941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149255387 - 2⁴ = 149255371 is a prime.

Together with 149255389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149255389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74627693 + 74627694.

It is an arithmetic number, because the mean of its divisors is an integer number (74627694).

Almost surely, 2^149255387 is an apocalyptic number.

149255387 is a deficient number, since it is larger than the sum of its proper divisors (1).

149255387 is an equidigital number, since it uses as much as digits as its factorization.

149255387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 149255387 is about 12217.0121961141. The cubic root of 149255387 is about 530.4486375714.

The spelling of 149255387 in words is "one hundred forty-nine million, two hundred fifty-five thousand, three hundred eighty-seven".