989292769 has 2 divisors, whose sum is σ = 989292770. Its totient is φ = 989292768.

The previous prime is 989292763. The next prime is 989292793. The reversal of 989292769 is 967292989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954068544 + 35224225 = 30888^2 + 5935^2 .

It is a cyclic number.

It is not a de Polignac number, because 989292769 - 2⁷ = 989292641 is a prime.

It is a super-2 number, since 2×989292769² = 1957400365591374722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (989292763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494646384 + 494646385.

It is an arithmetic number, because the mean of its divisors is an integer number (494646385).

Almost surely, 2^989292769 is an apocalyptic number.

It is an amenable number.

989292769 is a deficient number, since it is larger than the sum of its proper divisors (1).

989292769 is an equidigital number, since it uses as much as digits as its factorization.

989292769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 61.

The square root of 989292769 is about 31453.0247988965. The cubic root of 989292769 is about 996.4181083709.

The spelling of 989292769 in words is "nine hundred eighty-nine million, two hundred ninety-two thousand, seven hundred sixty-nine".