789431 has 4 divisors (see below), whose sum is σ = 831000. Its totient is φ = 747864.

The previous prime is 789419. The next prime is 789443. The reversal of 789431 is 134987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134987 = 23 ⋅5869.

It is an interprime number because it is at equal distance from previous prime (789419) and next prime (789443).

It is a cyclic number.

It is not a de Polignac number, because 789431 - 2⁶ = 789367 is a prime.

It is a super-2 number, since 2×789431² = 1246402607522, which contains 22 as substring.

It is a Duffinian 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 (789491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20756 + ... + 20793.

It is an arithmetic number, because the mean of its divisors is an integer number (207750).

2⁷⁸⁹⁴³¹ is an apocalyptic number.

789431 is a deficient number, since it is larger than the sum of its proper divisors (41569).

789431 is a wasteful number, since it uses less digits than its factorization.

789431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41568.

The product of its digits is 6048, while the sum is 32.

The square root of 789431 is about 888.4992965670. The cubic root of 789431 is about 92.4211551169.

The spelling of 789431 in words is "seven hundred eighty-nine thousand, four hundred thirty-one".