149910923 has 2 divisors, whose sum is σ = 149910924. Its totient is φ = 149910922.

The previous prime is 149910907. The next prime is 149910973. The reversal of 149910923 is 329019941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149910923 - 2⁴ = 149910907 is a prime.

It is not a weakly prime, because it can be changed into another prime (149910973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74955461 + 74955462.

It is an arithmetic number, because the mean of its divisors is an integer number (74955462).

Almost surely, 2^149910923 is an apocalyptic number.

149910923 is a deficient number, since it is larger than the sum of its proper divisors (1).

149910923 is an equidigital number, since it uses as much as digits as its factorization.

149910923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 149910923 is about 12243.8116205698. The cubic root of 149910923 is about 531.2240877234.

The spelling of 149910923 in words is "one hundred forty-nine million, nine hundred ten thousand, nine hundred twenty-three".