76426447 has 4 divisors (see below), whose sum is σ = 79749360. Its totient is φ = 73103536.

The previous prime is 76426429. The next prime is 76426451. The reversal of 76426447 is 74462467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74462467 = 1877 ⋅39671.

It is a cyclic number.

It is not a de Polignac number, because 76426447 - 2⁷ = 76426319 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76426457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661422 + ... + 1661467.

It is an arithmetic number, because the mean of its divisors is an integer number (19937340).

Almost surely, 2^76426447 is an apocalyptic number.

76426447 is a deficient number, since it is larger than the sum of its proper divisors (3322913).

76426447 is a wasteful number, since it uses less digits than its factorization.

76426447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322912.

The product of its digits is 225792, while the sum is 40.

The square root of 76426447 is about 8742.2220859459. Note that the first 3 decimals coincide. The cubic root of 76426447 is about 424.3731418383.

The spelling of 76426447 in words is "seventy-six million, four hundred twenty-six thousand, four hundred forty-seven".