149927291 has 2 divisors, whose sum is σ = 149927292. Its totient is φ = 149927290.

The previous prime is 149927287. The next prime is 149927339. The reversal of 149927291 is 192729941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149927291 - 2² = 149927287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149927231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74963645 + 74963646.

It is an arithmetic number, because the mean of its divisors is an integer number (74963646).

Almost surely, 2^149927291 is an apocalyptic number.

149927291 is a deficient number, since it is larger than the sum of its proper divisors (1).

149927291 is an equidigital number, since it uses as much as digits as its factorization.

149927291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 149927291 is about 12244.4800216261. The cubic root of 149927291 is about 531.2434208920.

The spelling of 149927291 in words is "one hundred forty-nine million, nine hundred twenty-seven thousand, two hundred ninety-one".