76041991 has 4 divisors (see below), whose sum is σ = 76794984. Its totient is φ = 75289000.

The previous prime is 76041989. The next prime is 76042013. The reversal of 76041991 is 19914067.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19914067 = 23 ⋅865829.

It is a cyclic number.

It is not a de Polignac number, because 76041991 - 2¹ = 76041989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76041991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76041961) 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, 376345 + ... + 376546.

It is an arithmetic number, because the mean of its divisors is an integer number (19198746).

Almost surely, 2^76041991 is an apocalyptic number.

76041991 is a deficient number, since it is larger than the sum of its proper divisors (752993).

76041991 is a wasteful number, since it uses less digits than its factorization.

76041991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752992.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 76041991 is about 8720.2059035323. The cubic root of 76041991 is about 423.6603556712.

The spelling of 76041991 in words is "seventy-six million, forty-one thousand, nine hundred ninety-one".