149224109 has 2 divisors, whose sum is σ = 149224110. Its totient is φ = 149224108.

The previous prime is 149224073. The next prime is 149224129. The reversal of 149224109 is 901422941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125507209 + 23716900 = 11203^2 + 4870^2 .

It is an emirp because it is prime and its reverse (901422941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149224109 - 2¹² = 149220013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149224129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74612054 + 74612055.

It is an arithmetic number, because the mean of its divisors is an integer number (74612055).

Almost surely, 2^149224109 is an apocalyptic number.

It is an amenable number.

149224109 is a deficient number, since it is larger than the sum of its proper divisors (1).

149224109 is an equidigital number, since it uses as much as digits as its factorization.

149224109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 149224109 is about 12215.7320288225. The cubic root of 149224109 is about 530.4115813285.

The spelling of 149224109 in words is "one hundred forty-nine million, two hundred twenty-four thousand, one hundred nine".