143947984139 has 4 divisors (see below), whose sum is σ = 148911707760. Its totient is φ = 138984260520.

The previous prime is 143947984123. The next prime is 143947984171. The reversal of 143947984139 is 931489749341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931489749341 = 52817 ⋅17636173.

It is a cyclic number.

It is not a de Polignac number, because 143947984139 - 2⁴ = 143947984123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143947984199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481861767 + ... + 2481861824.

It is an arithmetic number, because the mean of its divisors is an integer number (37227926940).

Almost surely, 2^143947984139 is an apocalyptic number.

143947984139 is a deficient number, since it is larger than the sum of its proper divisors (4963723621).

143947984139 is an equidigital number, since it uses as much as digits as its factorization.

143947984139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963723620.

The product of its digits is 23514624, while the sum is 62.

The spelling of 143947984139 in words is "one hundred forty-three billion, nine hundred forty-seven million, nine hundred eighty-four thousand, one hundred thirty-nine".