8242487969 has 2 divisors, whose sum is σ = 8242487970. Its totient is φ = 8242487968.

The previous prime is 8242487959. The next prime is 8242487999. The reversal of 8242487969 is 9697842428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4859902369 + 3382585600 = 69713^2 + 58160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8242487969 is a prime.

It is a super-2 number, since 2×8242487969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8242487959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121243984 + 4121243985.

It is an arithmetic number, because the mean of its divisors is an integer number (4121243985).

Almost surely, 2^8242487969 is an apocalyptic number.

It is an amenable number.

8242487969 is a deficient number, since it is larger than the sum of its proper divisors (1).

8242487969 is an equidigital number, since it uses as much as digits as its factorization.

8242487969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 59.

The square root of 8242487969 is about 90788.1488356272. The cubic root of 8242487969 is about 2020.0065327534.

The spelling of 8242487969 in words is "eight billion, two hundred forty-two million, four hundred eighty-seven thousand, nine hundred sixty-nine".