143899139 has 2 divisors, whose sum is σ = 143899140. Its totient is φ = 143899138.

The previous prime is 143899127. The next prime is 143899181. The reversal of 143899139 is 931998341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143899139 - 2⁴ = 143899123 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 143899093 and 143899102.

It is not a weakly prime, because it can be changed into another prime (143895139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71949569 + 71949570.

It is an arithmetic number, because the mean of its divisors is an integer number (71949570).

Almost surely, 2^143899139 is an apocalyptic number.

143899139 is a deficient number, since it is larger than the sum of its proper divisors (1).

143899139 is an equidigital number, since it uses as much as digits as its factorization.

143899139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 143899139 is about 11995.7967221857. The cubic root of 143899139 is about 524.0258749824.

The spelling of 143899139 in words is "one hundred forty-three million, eight hundred ninety-nine thousand, one hundred thirty-nine".