76838999 has 4 divisors (see below), whose sum is σ = 76893336. Its totient is φ = 76784664.

The previous prime is 76838989. The next prime is 76839001. The reversal of 76838999 is 99983867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76838999 - 2²⁰ = 75790423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76838939) 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, 24989 + ... + 27894.

It is an arithmetic number, because the mean of its divisors is an integer number (19223334).

Almost surely, 2^76838999 is an apocalyptic number.

76838999 is a deficient number, since it is larger than the sum of its proper divisors (54337).

76838999 is a wasteful number, since it uses less digits than its factorization.

76838999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54336.

The product of its digits is 5878656, while the sum is 59.

The square root of 76838999 is about 8765.7857035180. The cubic root of 76838999 is about 425.1353644937.

The spelling of 76838999 in words is "seventy-six million, eight hundred thirty-eight thousand, nine hundred ninety-nine".