86999743 has 2 divisors, whose sum is σ = 86999744. Its totient is φ = 86999742.

The previous prime is 86999729. The next prime is 86999747. The reversal of 86999743 is 34799968.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86999743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86999747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43499871 + 43499872.

It is an arithmetic number, because the mean of its divisors is an integer number (43499872).

Almost surely, 2^86999743 is an apocalyptic number.

86999743 is a deficient number, since it is larger than the sum of its proper divisors (1).

86999743 is an equidigital number, since it uses as much as digits as its factorization.

86999743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 86999743 is about 9327.3652764326. The cubic root of 86999743 is about 443.1043258550.

The spelling of 86999743 in words is "eighty-six million, nine hundred ninety-nine thousand, seven hundred forty-three".