73404047 has 2 divisors, whose sum is σ = 73404048. Its totient is φ = 73404046.

The previous prime is 73404043. The next prime is 73404077. The reversal of 73404047 is 74040437.

It is a weak prime.

It is an emirp because it is prime and its reverse (74040437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73404047 - 2² = 73404043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73404043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36702023 + 36702024.

It is an arithmetic number, because the mean of its divisors is an integer number (36702024).

Almost surely, 2^73404047 is an apocalyptic number.

73404047 is a deficient number, since it is larger than the sum of its proper divisors (1).

73404047 is an equidigital number, since it uses as much as digits as its factorization.

73404047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 73404047 is about 8567.6161795449. The cubic root of 73404047 is about 418.7035742100.

The spelling of 73404047 in words is "seventy-three million, four hundred four thousand, forty-seven".