986409493 has 2 divisors, whose sum is σ = 986409494. Its totient is φ = 986409492.

The previous prime is 986409481. The next prime is 986409527. The reversal of 986409493 is 394904689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984578884 + 1830609 = 31378^2 + 1353^2 .

It is an emirp because it is prime and its reverse (394904689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 986409493 - 2¹³ = 986401301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 986409493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986407493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493204746 + 493204747.

It is an arithmetic number, because the mean of its divisors is an integer number (493204747).

Almost surely, 2^986409493 is an apocalyptic number.

It is an amenable number.

986409493 is a deficient number, since it is larger than the sum of its proper divisors (1).

986409493 is an equidigital number, since it uses as much as digits as its factorization.

986409493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 986409493 is about 31407.1567162645. The cubic root of 986409493 is about 995.4491522007.

The spelling of 986409493 in words is "nine hundred eighty-six million, four hundred nine thousand, four hundred ninety-three".