986391253 has 2 divisors, whose sum is σ = 986391254. Its totient is φ = 986391252.

The previous prime is 986391229. The next prime is 986391281. The reversal of 986391253 is 352193689.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568679409 + 417711844 = 23847^2 + 20438^2 .

It is an emirp because it is prime and its reverse (352193689) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-986391253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986391223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493195626 + 493195627.

It is an arithmetic number, because the mean of its divisors is an integer number (493195627).

Almost surely, 2^986391253 is an apocalyptic number.

It is an amenable number.

986391253 is a deficient number, since it is larger than the sum of its proper divisors (1).

986391253 is an equidigital number, since it uses as much as digits as its factorization.

986391253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 46.

The square root of 986391253 is about 31406.8663352459. The cubic root of 986391253 is about 995.4430164445.

The spelling of 986391253 in words is "nine hundred eighty-six million, three hundred ninety-one thousand, two hundred fifty-three".