143864844 has 12 divisors (see below), whose sum is σ = 335684664. Its totient is φ = 47954944.

The previous prime is 143864837. The next prime is 143864867. The reversal of 143864844 is 448468341.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 143864796 and 143864805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5994357 + ... + 5994380.

It is an arithmetic number, because the mean of its divisors is an integer number (27973722).

Almost surely, 2^143864844 is an apocalyptic number.

It is an amenable number.

143864844 is an abundant number, since it is smaller than the sum of its proper divisors (191819820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143864844 is a wasteful number, since it uses less digits than its factorization.

143864844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988744 (or 11988742 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 143864844 is about 11994.3671779715. The cubic root of 143864844 is about 523.9842418974.

The spelling of 143864844 in words is "one hundred forty-three million, eight hundred sixty-four thousand, eight hundred forty-four".