143946669 has 8 divisors (see below), whose sum is σ = 191984992. Its totient is φ = 95936400.

The previous prime is 143946659. The next prime is 143946697. The reversal of 143946669 is 966649341.

143946669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 143946669 - 2⁵ = 143946637 is a prime.

It is a super-2 number, since 2×143946669² = 41441287032391122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143946629) 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, 13719 + ... + 21819.

It is an arithmetic number, because the mean of its divisors is an integer number (23998124).

Almost surely, 2^143946669 is an apocalyptic number.

It is an amenable number.

143946669 is a deficient number, since it is larger than the sum of its proper divisors (48038323).

143946669 is an equidigital number, since it uses as much as digits as its factorization.

143946669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14027.

The product of its digits is 839808, while the sum is 48.

The square root of 143946669 is about 11997.7776692186. Note that the first 3 decimals coincide. The cubic root of 143946669 is about 524.0835640190.

The spelling of 143946669 in words is "one hundred forty-three million, nine hundred forty-six thousand, six hundred sixty-nine".