143440987 has 2 divisors, whose sum is σ = 143440988. Its totient is φ = 143440986.

The previous prime is 143440967. The next prime is 143441003. The reversal of 143440987 is 789044341.

143440987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143440987 - 2²⁷ = 9223259 is a prime.

It is not a weakly prime, because it can be changed into another prime (143440967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71720493 + 71720494.

It is an arithmetic number, because the mean of its divisors is an integer number (71720494).

Almost surely, 2^143440987 is an apocalyptic number.

143440987 is a deficient number, since it is larger than the sum of its proper divisors (1).

143440987 is an equidigital number, since it uses as much as digits as its factorization.

143440987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 143440987 is about 11976.6851423923. The cubic root of 143440987 is about 523.4691453362.

The spelling of 143440987 in words is "one hundred forty-three million, four hundred forty thousand, nine hundred eighty-seven".