149187227 has 4 divisors (see below), whose sum is σ = 170499696. Its totient is φ = 127874760.

The previous prime is 149187197. The next prime is 149187239. The reversal of 149187227 is 722781941.

149187227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722781941 = 7 ⋅103254563.

It is a cyclic number.

It is not a de Polignac number, because 149187227 - 2⁶ = 149187163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149187277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10656224 + ... + 10656237.

It is an arithmetic number, because the mean of its divisors is an integer number (42624924).

Almost surely, 2^149187227 is an apocalyptic number.

149187227 is a deficient number, since it is larger than the sum of its proper divisors (21312469).

149187227 is an equidigital number, since it uses as much as digits as its factorization.

149187227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21312468.

The product of its digits is 56448, while the sum is 41.

The square root of 149187227 is about 12214.2223248146. Note that the first 3 decimals coincide. The cubic root of 149187227 is about 530.3678791592.

The spelling of 149187227 in words is "one hundred forty-nine million, one hundred eighty-seven thousand, two hundred twenty-seven".