76434789 has 4 divisors (see below), whose sum is σ = 101913056. Its totient is φ = 50956524.

The previous prime is 76434767. The next prime is 76434793. The reversal of 76434789 is 98743467.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98743467 = 3 ⋅32914489.

It is not a de Polignac number, because 76434789 - 2⁷ = 76434661 is a prime.

It is a super-3 number, since 3×76434789³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76434389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12739129 + ... + 12739134.

It is an arithmetic number, because the mean of its divisors is an integer number (25478264).

Almost surely, 2^76434789 is an apocalyptic number.

It is an amenable number.

76434789 is a deficient number, since it is larger than the sum of its proper divisors (25478267).

76434789 is a wasteful number, since it uses less digits than its factorization.

76434789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25478266.

The product of its digits is 1016064, while the sum is 48.

The square root of 76434789 is about 8742.6991827467. The cubic root of 76434789 is about 424.3885814847.

It can be divided in two parts, 764 and 34789, that added together give a palindrome (35553).

The spelling of 76434789 in words is "seventy-six million, four hundred thirty-four thousand, seven hundred eighty-nine".