149271149 has 4 divisors (see below), whose sum is σ = 154418460. Its totient is φ = 144123840.

The previous prime is 149271043. The next prime is 149271151. The reversal of 149271149 is 941172941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51122500 + 98148649 = 7150^2 + 9907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149271149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149271649) 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, 2573612 + ... + 2573669.

It is an arithmetic number, because the mean of its divisors is an integer number (38604615).

Almost surely, 2^149271149 is an apocalyptic number.

It is an amenable number.

149271149 is a deficient number, since it is larger than the sum of its proper divisors (5147311).

149271149 is an equidigital number, since it uses as much as digits as its factorization.

149271149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147310.

The product of its digits is 18144, while the sum is 38.

The square root of 149271149 is about 12217.6572631581. The cubic root of 149271149 is about 530.4673094538.

The spelling of 149271149 in words is "one hundred forty-nine million, two hundred seventy-one thousand, one hundred forty-nine".