143422984 has 8 divisors (see below), whose sum is σ = 268918110. Its totient is φ = 71711488.

The previous prime is 143422973. The next prime is 143422987. The reversal of 143422984 is 489224341.

It can be written as a sum of positive squares in only one way, i.e., 135070884 + 8352100 = 11622^2 + 2890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (143422987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8963929 + ... + 8963944.

Almost surely, 2^143422984 is an apocalyptic number.

It is an amenable number.

143422984 is a deficient number, since it is larger than the sum of its proper divisors (125495126).

143422984 is a wasteful number, since it uses less digits than its factorization.

143422984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17927879 (or 17927875 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 143422984 is about 11975.9335335497. The cubic root of 143422984 is about 523.4472445543.

The spelling of 143422984 in words is "one hundred forty-three million, four hundred twenty-two thousand, nine hundred eighty-four".