149210923 has 2 divisors, whose sum is σ = 149210924. Its totient is φ = 149210922.

The previous prime is 149210911. The next prime is 149210927. The reversal of 149210923 is 329012941.

149210923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (329012941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149210923 - 2⁵ = 149210891 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (149210927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74605461 + 74605462.

It is an arithmetic number, because the mean of its divisors is an integer number (74605462).

Almost surely, 2^149210923 is an apocalyptic number.

149210923 is a deficient number, since it is larger than the sum of its proper divisors (1).

149210923 is an equidigital number, since it uses as much as digits as its factorization.

149210923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 149210923 is about 12215.1923030299. The cubic root of 149210923 is about 530.3959578184.

The spelling of 149210923 in words is "one hundred forty-nine million, two hundred ten thousand, nine hundred twenty-three".