149889 has 8 divisors (see below), whose sum is σ = 211680. Its totient is φ = 94016.

The previous prime is 149873. The next prime is 149893. The reversal of 149889 is 988941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149889 - 2⁴ = 149873 is a prime.

It is an Ulam number.

149889 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149889.

It is not an unprimeable number, because it can be changed into a prime (149839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2¹⁴⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

149889 is a deficient number, since it is larger than the sum of its proper divisors (61791).

149889 is a wasteful number, since it uses less digits than its factorization.

149889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959.

The product of its digits is 20736, while the sum is 39.

The square root of 149889 is about 387.1550077165. The cubic root of 149889 is about 53.1198191026.

The spelling of 149889 in words is "one hundred forty-nine thousand, eight hundred eighty-nine".