73400939 has 2 divisors, whose sum is σ = 73400940. Its totient is φ = 73400938.

The previous prime is 73400923. The next prime is 73400953. The reversal of 73400939 is 93900437.

It is a strong prime.

It is an emirp because it is prime and its reverse (93900437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73400939 - 2⁴ = 73400923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73400899 and 73400908.

It is not a weakly prime, because it can be changed into another prime (73400969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36700469 + 36700470.

It is an arithmetic number, because the mean of its divisors is an integer number (36700470).

Almost surely, 2^73400939 is an apocalyptic number.

73400939 is a deficient number, since it is larger than the sum of its proper divisors (1).

73400939 is an equidigital number, since it uses as much as digits as its factorization.

73400939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 73400939 is about 8567.4347969506. The cubic root of 73400939 is about 418.6976646854.

The spelling of 73400939 in words is "seventy-three million, four hundred thousand, nine hundred thirty-nine".