149916723 has 16 divisors (see below), whose sum is σ = 218265600. Its totient is φ = 90773280.

The previous prime is 149916719. The next prime is 149916731. The reversal of 149916723 is 327619941.

It is not a de Polignac number, because 149916723 - 2² = 149916719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149916763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65838 + ... + 68076.

It is an arithmetic number, because the mean of its divisors is an integer number (13641600).

Almost surely, 2^149916723 is an apocalyptic number.

149916723 is a deficient number, since it is larger than the sum of its proper divisors (68348877).

149916723 is a wasteful number, since it uses less digits than its factorization.

149916723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282.

The product of its digits is 81648, while the sum is 42.

The square root of 149916723 is about 12244.0484726254. The cubic root of 149916723 is about 531.2309385917.

The spelling of 149916723 in words is "one hundred forty-nine million, nine hundred sixteen thousand, seven hundred twenty-three".