76889009 has 4 divisors (see below), whose sum is σ = 77476080. Its totient is φ = 76301940.

The previous prime is 76888979. The next prime is 76889017. The reversal of 76889009 is 90098867.

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: 90098867 = 367 ⋅245501.

It is a cyclic number.

It is not a de Polignac number, because 76889009 - 2⁸ = 76888753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76889089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293339 + ... + 293600.

It is an arithmetic number, because the mean of its divisors is an integer number (19369020).

Almost surely, 2^76889009 is an apocalyptic number.

It is an amenable number.

76889009 is a deficient number, since it is larger than the sum of its proper divisors (587071).

76889009 is a wasteful number, since it uses less digits than its factorization.

76889009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587070.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 76889009 is about 8768.6378075503. The cubic root of 76889009 is about 425.2275763869.

The spelling of 76889009 in words is "seventy-six million, eight hundred eighty-nine thousand, nine".