76749229 has 4 divisors (see below), whose sum is σ = 80086176. Its totient is φ = 73412284.

The previous prime is 76749217. The next prime is 76749251. The reversal of 76749229 is 92294767.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76749229 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 (76749209) 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, 1668439 + ... + 1668484.

It is an arithmetic number, because the mean of its divisors is an integer number (20021544).

Almost surely, 2^76749229 is an apocalyptic number.

It is an amenable number.

76749229 is a deficient number, since it is larger than the sum of its proper divisors (3336947).

76749229 is a wasteful number, since it uses less digits than its factorization.

76749229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336946.

The product of its digits is 381024, while the sum is 46.

The square root of 76749229 is about 8760.6637305629. The cubic root of 76749229 is about 424.9697399447.

The spelling of 76749229 in words is "seventy-six million, seven hundred forty-nine thousand, two hundred twenty-nine".