986391223 has 2 divisors, whose sum is σ = 986391224. Its totient is φ = 986391222.

The previous prime is 986391193. The next prime is 986391229. The reversal of 986391223 is 322193689.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 986391223 - 2⁵ = 986391191 is a prime.

It is a super-2 number, since 2×986391223² = 1945935289622871458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 986391223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986391229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493195611 + 493195612.

It is an arithmetic number, because the mean of its divisors is an integer number (493195612).

Almost surely, 2^986391223 is an apocalyptic number.

986391223 is a deficient number, since it is larger than the sum of its proper divisors (1).

986391223 is an equidigital number, since it uses as much as digits as its factorization.

986391223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 986391223 is about 31406.8658576433. The cubic root of 986391223 is about 995.4430063527.

The spelling of 986391223 in words is "nine hundred eighty-six million, three hundred ninety-one thousand, two hundred twenty-three".