76445869 has 2 divisors, whose sum is σ = 76445870. Its totient is φ = 76445868.

The previous prime is 76445867. The next prime is 76445903. The reversal of 76445869 is 96854467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49871844 + 26574025 = 7062^2 + 5155^2 .

It is an emirp because it is prime and its reverse (96854467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76445869 - 2¹ = 76445867 is a prime.

It is a super-2 number, since 2×76445869² = 11687941774330322, which contains 22 as substring.

Together with 76445867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76445867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38222934 + 38222935.

It is an arithmetic number, because the mean of its divisors is an integer number (38222935).

Almost surely, 2^76445869 is an apocalyptic number.

It is an amenable number.

76445869 is a deficient number, since it is larger than the sum of its proper divisors (1).

76445869 is an equidigital number, since it uses as much as digits as its factorization.

76445869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 76445869 is about 8743.3328313636. The cubic root of 76445869 is about 424.4090869742.

The spelling of 76445869 in words is "seventy-six million, four hundred forty-five thousand, eight hundred sixty-nine".