149873 has 2 divisors, whose sum is σ = 149874. Its totient is φ = 149872.

The previous prime is 149867. The next prime is 149893. The reversal of 149873 is 378941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142129 + 7744 = 377^2 + 88^2 .

It is an emirp because it is prime and its reverse (378941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149873 - 2¹² = 145777 is a prime.

It is a super-2 number, since 2×149873² = 44923832258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74936 + 74937.

It is an arithmetic number, because the mean of its divisors is an integer number (74937).

2¹⁴⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

149873 is a deficient number, since it is larger than the sum of its proper divisors (1).

149873 is an equidigital number, since it uses as much as digits as its factorization.

149873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 149873 is about 387.1343436070. The cubic root of 149873 is about 53.1179289320.

The spelling of 149873 in words is "one hundred forty-nine thousand, eight hundred seventy-three".