76447453 has 4 divisors (see below), whose sum is σ = 80944380. Its totient is φ = 71950528.

The previous prime is 76447409. The next prime is 76447463. The reversal of 76447453 is 35474467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35474467 = 7 ⋅5067781.

It can be written as a sum of positive squares in 2 ways, for example, as 38477209 + 37970244 = 6203^2 + 6162^2 .

It is not a de Polignac number, because 76447453 - 2²¹ = 74350301 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 (76447463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2248438 + ... + 2248471.

It is an arithmetic number, because the mean of its divisors is an integer number (20236095).

Almost surely, 2^76447453 is an apocalyptic number.

It is an amenable number.

76447453 is a deficient number, since it is larger than the sum of its proper divisors (4496927).

76447453 is a wasteful number, since it uses less digits than its factorization.

76447453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496926.

The product of its digits is 282240, while the sum is 40.

The square root of 76447453 is about 8743.4234142011. The cubic root of 76447453 is about 424.4120182830.

The spelling of 76447453 in words is "seventy-six million, four hundred forty-seven thousand, four hundred fifty-three".