787969 has 12 divisors (see below), whose sum is σ = 987924. Its totient is φ = 622944.

The previous prime is 787939. The next prime is 787973. The reversal of 787969 is 969787.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 442225 = 588^2 + 665^2 .

It is not a de Polignac number, because 787969 - 2¹¹ = 785921 is a prime.

It is a super-2 number, since 2×787969² = 1241790289922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (787939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (82327).

2⁷⁸⁷⁹⁶⁹ is an apocalyptic number.

787969 is the 513-rd hex number.

It is an amenable number.

787969 is a deficient number, since it is larger than the sum of its proper divisors (199955).

787969 is a wasteful number, since it uses less digits than its factorization.

787969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1257 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 787969 is about 887.6761796962. The cubic root of 787969 is about 92.3640662233.

The spelling of 787969 in words is "seven hundred eighty-seven thousand, nine hundred sixty-nine".