149893423 has 2 divisors, whose sum is σ = 149893424. Its totient is φ = 149893422.

The previous prime is 149893397. The next prime is 149893427. The reversal of 149893423 is 324398941.

It is a strong prime.

It is an emirp because it is prime and its reverse (324398941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149893423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149893423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149893427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74946711 + 74946712.

It is an arithmetic number, because the mean of its divisors is an integer number (74946712).

Almost surely, 2^149893423 is an apocalyptic number.

149893423 is a deficient number, since it is larger than the sum of its proper divisors (1).

149893423 is an equidigital number, since it uses as much as digits as its factorization.

149893423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 149893423 is about 12243.0969529772. The cubic root of 149893423 is about 531.2034159291.

The spelling of 149893423 in words is "one hundred forty-nine million, eight hundred ninety-three thousand, four hundred twenty-three".