143969 has 8 divisors (see below), whose sum is σ = 166848. Its totient is φ = 121680.

The previous prime is 143953. The next prime is 143971. The reversal of 143969 is 969341.

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 143969 - 2⁴ = 143953 is a prime.

It is a super-2 number, since 2×143969² = 41454145922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (20856).

2¹⁴³⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

143969 is a deficient number, since it is larger than the sum of its proper divisors (22879).

143969 is a wasteful number, since it uses less digits than its factorization.

143969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295.

The product of its digits is 5832, while the sum is 32.

The square root of 143969 is about 379.4324709352. The cubic root of 143969 is about 52.4110663650.

The spelling of 143969 in words is "one hundred forty-three thousand, nine hundred sixty-nine".