149992 has 8 divisors (see below), whose sum is σ = 281250. Its totient is φ = 74992.

The previous prime is 149971. The next prime is 149993. The reversal of 149992 is 299941.

It can be written as a sum of positive squares in only one way, i.e., 119716 + 30276 = 346^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (149993) by changing a digit.

149992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367 + ... + 9382.

2¹⁴⁹⁹⁹² is an apocalyptic number.

It is an amenable number.

149992 is a deficient number, since it is larger than the sum of its proper divisors (131258).

149992 is a wasteful number, since it uses less digits than its factorization.

149992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18755 (or 18751 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 149992 is about 387.2880065274. The cubic root of 149992 is about 53.1319838569.

The spelling of 149992 in words is "one hundred forty-nine thousand, nine hundred ninety-two".