73985407 has 2 divisors, whose sum is σ = 73985408. Its totient is φ = 73985406.

The previous prime is 73985399. The next prime is 73985441. The reversal of 73985407 is 70458937.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70458937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73985407 - 2³ = 73985399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73985447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36992703 + 36992704.

It is an arithmetic number, because the mean of its divisors is an integer number (36992704).

Almost surely, 2^73985407 is an apocalyptic number.

73985407 is a deficient number, since it is larger than the sum of its proper divisors (1).

73985407 is an equidigital number, since it uses as much as digits as its factorization.

73985407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 73985407 is about 8601.4770243255. The cubic root of 73985407 is about 419.8060461234.

The spelling of 73985407 in words is "seventy-three million, nine hundred eighty-five thousand, four hundred seven".