143889964 has 12 divisors (see below), whose sum is σ = 265060600. Its totient is φ = 68158368.

The previous prime is 143889943. The next prime is 143890013. The reversal of 143889964 is 469988341.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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, 946569 + ... + 946720.

Almost surely, 2^143889964 is an apocalyptic number.

It is an amenable number.

143889964 is a deficient number, since it is larger than the sum of its proper divisors (121170636).

143889964 is a wasteful number, since it uses less digits than its factorization.

143889964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893312 (or 1893310 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 143889964 is about 11995.4142904695. The cubic root of 143889964 is about 524.0147374601.

The spelling of 143889964 in words is "one hundred forty-three million, eight hundred eighty-nine thousand, nine hundred sixty-four".