149471723 has 2 divisors, whose sum is σ = 149471724. Its totient is φ = 149471722.

The previous prime is 149471719. The next prime is 149471731. The reversal of 149471723 is 327174941.

It is a happy number.

149471723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (327174941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149471723 - 2² = 149471719 is a prime.

It is not a weakly prime, because it can be changed into another prime (149471743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74735861 + 74735862.

It is an arithmetic number, because the mean of its divisors is an integer number (74735862).

Almost surely, 2^149471723 is an apocalyptic number.

149471723 is a deficient number, since it is larger than the sum of its proper divisors (1).

149471723 is an equidigital number, since it uses as much as digits as its factorization.

149471723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 149471723 is about 12225.8628734335. The cubic root of 149471723 is about 530.7047974773.

The spelling of 149471723 in words is "one hundred forty-nine million, four hundred seventy-one thousand, seven hundred twenty-three".