73847491 has 2 divisors, whose sum is σ = 73847492. Its totient is φ = 73847490.

The previous prime is 73847489. The next prime is 73847533. The reversal of 73847491 is 19474837.

It is a weak prime.

It is an emirp because it is prime and its reverse (19474837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73847491 - 2¹ = 73847489 is a prime.

Together with 73847489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73847401) 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 as a sum of consecutive naturals, namely, 36923745 + 36923746.

It is an arithmetic number, because the mean of its divisors is an integer number (36923746).

Almost surely, 2^73847491 is an apocalyptic number.

73847491 is a deficient number, since it is larger than the sum of its proper divisors (1).

73847491 is an equidigital number, since it uses as much as digits as its factorization.

73847491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 73847491 is about 8593.4562895264. The cubic root of 73847491 is about 419.5450307595.

The spelling of 73847491 in words is "seventy-three million, eight hundred forty-seven thousand, four hundred ninety-one".