83144987 has 2 divisors, whose sum is σ = 83144988. Its totient is φ = 83144986.

The previous prime is 83144981. The next prime is 83145037. The reversal of 83144987 is 78944138.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83144987 - 2¹² = 83140891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83144981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41572493 + 41572494.

It is an arithmetic number, because the mean of its divisors is an integer number (41572494).

Almost surely, 2^83144987 is an apocalyptic number.

83144987 is a deficient number, since it is larger than the sum of its proper divisors (1).

83144987 is an equidigital number, since it uses as much as digits as its factorization.

83144987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 83144987 is about 9118.3873025881. The cubic root of 83144987 is about 436.4609127840.

The spelling of 83144987 in words is "eighty-three million, one hundred forty-four thousand, nine hundred eighty-seven".