987444769 has 2 divisors, whose sum is σ = 987444770. Its totient is φ = 987444768.

The previous prime is 987444707. The next prime is 987444817. The reversal of 987444769 is 967444789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986713744 + 731025 = 31412^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 987444769 - 2¹⁷ = 987313697 is a prime.

It is a super-2 number, since 2×987444769² = 1950094343650926722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (987444869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493722384 + 493722385.

It is an arithmetic number, because the mean of its divisors is an integer number (493722385).

Almost surely, 2^987444769 is an apocalyptic number.

It is an amenable number.

987444769 is a deficient number, since it is larger than the sum of its proper divisors (1).

987444769 is an equidigital number, since it uses as much as digits as its factorization.

987444769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 58.

The square root of 987444769 is about 31423.6339241661. The cubic root of 987444769 is about 995.7972849300.

The spelling of 987444769 in words is "nine hundred eighty-seven million, four hundred forty-four thousand, seven hundred sixty-nine".