789669 has 10 divisors (see below), whose sum is σ = 1179750. Its totient is φ = 526392.

The previous prime is 789653. The next prime is 789671. The reversal of 789669 is 966987.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 245025 = 738^2 + 495^2 .

It is not a de Polignac number, because 789669 - 2⁴ = 789653 is a prime.

It is a super-2 number, since 2×789669² = 1247154259122, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789689) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4794 + ... + 4955.

It is an arithmetic number, because the mean of its divisors is an integer number (117975).

2⁷⁸⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

789669 is a deficient number, since it is larger than the sum of its proper divisors (390081).

789669 is an equidigital number, since it uses as much as digits as its factorization.

789669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761 (or 9752 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 789669 is about 888.6332201758. The cubic root of 789669 is about 92.4304419850.

It can be divided in two parts, 7 and 89669, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 789669 in words is "seven hundred eighty-nine thousand, six hundred sixty-nine".