154489 has 8 divisors (see below), whose sum is σ = 167040. Its totient is φ = 142416.

The previous prime is 154487. The next prime is 154493. The reversal of 154489 is 984451.

It is a happy number.

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 154489 - 2¹ = 154487 is a prime.

It is a super-2 number, since 2×154489² = 47733702242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154489.

It is not an unprimeable number, because it can be changed into a prime (154487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (20880).

2¹⁵⁴⁴⁸⁹ is an apocalyptic number.

154489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

154489 is a deficient number, since it is larger than the sum of its proper divisors (12551).

154489 is a wasteful number, since it uses less digits than its factorization.

154489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its digits is 5760, while the sum is 31.

The square root of 154489 is about 393.0508872907. The cubic root of 154489 is about 53.6577577811.

The spelling of 154489 in words is "one hundred fifty-four thousand, four hundred eighty-nine".