149989277 has 2 divisors, whose sum is σ = 149989278. Its totient is φ = 149989276.

The previous prime is 149989243. The next prime is 149989303. The reversal of 149989277 is 772989941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124121881 + 25867396 = 11141^2 + 5086^2 .

It is an emirp because it is prime and its reverse (772989941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149989277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149989237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74994638 + 74994639.

It is an arithmetic number, because the mean of its divisors is an integer number (74994639).

Almost surely, 2^149989277 is an apocalyptic number.

It is an amenable number.

149989277 is a deficient number, since it is larger than the sum of its proper divisors (1).

149989277 is an equidigital number, since it uses as much as digits as its factorization.

149989277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The square root of 149989277 is about 12247.0109414502. The cubic root of 149989277 is about 531.3166233031.

The spelling of 149989277 in words is "one hundred forty-nine million, nine hundred eighty-nine thousand, two hundred seventy-seven".