149919 has 24 divisors (see below), whose sum is σ = 255360. Its totient is φ = 76560.

The previous prime is 149911. The next prime is 149921. The reversal of 149919 is 919941.

It is not a de Polignac number, because 149919 - 2³ = 149911 is a prime.

It is a super-2 number, since 2×149919² = 44951413122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

149919 is a lucky number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 149919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2512 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (10640).

2¹⁴⁹⁹¹⁹ is an apocalyptic number.

149919 is a deficient number, since it is larger than the sum of its proper divisors (105441).

149919 is a wasteful number, since it uses less digits than its factorization.

149919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 80 counting only the distinct ones).

The product of its digits is 2916, while the sum is 33.

The square root of 149919 is about 387.1937499496. The cubic root of 149919 is about 53.1233628100.

The spelling of 149919 in words is "one hundred forty-nine thousand, nine hundred nineteen".