7662242989 has 2 divisors, whose sum is σ = 7662242990. Its totient is φ = 7662242988.

The previous prime is 7662242969. The next prime is 7662243047. The reversal of 7662242989 is 9892422667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7540317225 + 121925764 = 86835^2 + 11042^2 .

It is a cyclic number.

It is not a de Polignac number, because 7662242989 - 2⁹ = 7662242477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7662242969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3831121494 + 3831121495.

It is an arithmetic number, because the mean of its divisors is an integer number (3831121495).

Almost surely, 2^7662242989 is an apocalyptic number.

It is an amenable number.

7662242989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7662242989 is an equidigital number, since it uses as much as digits as its factorization.

7662242989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 55.

The square root of 7662242989 is about 87534.2389525379. The cubic root of 7662242989 is about 1971.4479112202.

The spelling of 7662242989 in words is "seven billion, six hundred sixty-two million, two hundred forty-two thousand, nine hundred eighty-nine".