73868947 has 4 divisors (see below), whose sum is σ = 73956400. Its totient is φ = 73781496.

The previous prime is 73868929. The next prime is 73868953. The reversal of 73868947 is 74986837.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73868947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73868894 and 73868903.

It is not an unprimeable number, because it can be changed into a prime (73865947) 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 in 3 ways as a sum of consecutive naturals, for example, 42447 + ... + 44152.

It is an arithmetic number, because the mean of its divisors is an integer number (18489100).

Almost surely, 2^73868947 is an apocalyptic number.

73868947 is a deficient number, since it is larger than the sum of its proper divisors (87453).

73868947 is an equidigital number, since it uses as much as digits as its factorization.

73868947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87452.

The product of its digits is 2032128, while the sum is 52.

The square root of 73868947 is about 8594.7045906186. The cubic root of 73868947 is about 419.5856590255.

The spelling of 73868947 in words is "seventy-three million, eight hundred sixty-eight thousand, nine hundred forty-seven".