149879291 has 2 divisors, whose sum is σ = 149879292. Its totient is φ = 149879290.

The previous prime is 149879243. The next prime is 149879311. The reversal of 149879291 is 192978941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149879291 - 2⁶ = 149879227 is a prime.

It is not a weakly prime, because it can be changed into another prime (149879591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74939645 + 74939646.

It is an arithmetic number, because the mean of its divisors is an integer number (74939646).

Almost surely, 2^149879291 is an apocalyptic number.

149879291 is a deficient number, since it is larger than the sum of its proper divisors (1).

149879291 is an equidigital number, since it uses as much as digits as its factorization.

149879291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 50.

The square root of 149879291 is about 12242.5197978194. The cubic root of 149879291 is about 531.1867213950.

The spelling of 149879291 in words is "one hundred forty-nine million, eight hundred seventy-nine thousand, two hundred ninety-one".