76472729 has 2 divisors, whose sum is σ = 76472730. Its totient is φ = 76472728.

The previous prime is 76472719. The next prime is 76472731. The reversal of 76472729 is 92727467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67158025 + 9314704 = 8195^2 + 3052^2 .

It is a cyclic number.

It is not a de Polignac number, because 76472729 - 2¹⁶ = 76407193 is a prime.

Together with 76472731, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76472729.

It is not a weakly prime, because it can be changed into another prime (76472719) 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 as a sum of consecutive naturals, namely, 38236364 + 38236365.

It is an arithmetic number, because the mean of its divisors is an integer number (38236365).

Almost surely, 2^76472729 is an apocalyptic number.

It is an amenable number.

76472729 is a deficient number, since it is larger than the sum of its proper divisors (1).

76472729 is an equidigital number, since it uses as much as digits as its factorization.

76472729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 44.

The square root of 76472729 is about 8744.8687240004. The cubic root of 76472729 is about 424.4587879079.

The spelling of 76472729 in words is "seventy-six million, four hundred seventy-two thousand, seven hundred twenty-nine".