149996873 has 4 divisors (see below), whose sum is σ = 161535108. Its totient is φ = 138458640.

The previous prime is 149996867. The next prime is 149996893. The reversal of 149996873 is 378699941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378699941 = 173 ⋅2189017.

It can be written as a sum of positive squares in 2 ways, for example, as 94225849 + 55771024 = 9707^2 + 7468^2 .

It is a cyclic number.

It is not a de Polignac number, because 149996873 - 2⁸ = 149996617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149996843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5769098 + ... + 5769123.

It is an arithmetic number, because the mean of its divisors is an integer number (40383777).

Almost surely, 2^149996873 is an apocalyptic number.

149996873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149996873 is a deficient number, since it is larger than the sum of its proper divisors (11538235).

149996873 is a wasteful number, since it uses less digits than its factorization.

149996873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11538234.

The product of its digits is 2939328, while the sum is 56.

The square root of 149996873 is about 12247.3210540101. The cubic root of 149996873 is about 531.3255924175.

The spelling of 149996873 in words is "one hundred forty-nine million, nine hundred ninety-six thousand, eight hundred seventy-three".