986944631 has 2 divisors, whose sum is σ = 986944632. Its totient is φ = 986944630.

The previous prime is 986944577. The next prime is 986944633. The reversal of 986944631 is 136449689.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 986944631 - 2²⁶ = 919835767 is a prime.

It is a super-2 number, since 2×986944631² = 1948119409319452322, which contains 22 as substring.

Together with 986944633, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 986944631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986944633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493472315 + 493472316.

It is an arithmetic number, because the mean of its divisors is an integer number (493472316).

Almost surely, 2^986944631 is an apocalyptic number.

986944631 is a deficient number, since it is larger than the sum of its proper divisors (1).

986944631 is an equidigital number, since it uses as much as digits as its factorization.

986944631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 986944631 is about 31415.6749251071. The cubic root of 986944631 is about 995.6291336954.

The spelling of 986944631 in words is "nine hundred eighty-six million, nine hundred forty-four thousand, six hundred thirty-one".