76091749 has 2 divisors, whose sum is σ = 76091750. Its totient is φ = 76091748.

The previous prime is 76091723. The next prime is 76091753. The reversal of 76091749 is 94719067.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 16524225 = 7718^2 + 4065^2 .

It is a cyclic number.

It is not a de Polignac number, because 76091749 - 2⁹ = 76091237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76091849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38045874 + 38045875.

It is an arithmetic number, because the mean of its divisors is an integer number (38045875).

Almost surely, 2^76091749 is an apocalyptic number.

It is an amenable number.

76091749 is a deficient number, since it is larger than the sum of its proper divisors (1).

76091749 is an equidigital number, since it uses as much as digits as its factorization.

76091749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 76091749 is about 8723.0584659281. The cubic root of 76091749 is about 423.7527427650.

The spelling of 76091749 in words is "seventy-six million, ninety-one thousand, seven hundred forty-nine".