73944947 has 2 divisors, whose sum is σ = 73944948. Its totient is φ = 73944946.

The previous prime is 73944919. The next prime is 73944961. The reversal of 73944947 is 74944937.

It is a strong prime.

It is an emirp because it is prime and its reverse (74944937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73944947 - 2⁸ = 73944691 is a prime.

It is not a weakly prime, because it can be changed into another prime (73944967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36972473 + 36972474.

It is an arithmetic number, because the mean of its divisors is an integer number (36972474).

Almost surely, 2^73944947 is an apocalyptic number.

73944947 is a deficient number, since it is larger than the sum of its proper divisors (1).

73944947 is an equidigital number, since it uses as much as digits as its factorization.

73944947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 73944947 is about 8599.1247810460. The cubic root of 73944947 is about 419.7295064809.

The spelling of 73944947 in words is "seventy-three million, nine hundred forty-four thousand, nine hundred forty-seven".