73920491 has 2 divisors, whose sum is σ = 73920492. Its totient is φ = 73920490.

The previous prime is 73920481. The next prime is 73920521. The reversal of 73920491 is 19402937.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73920491 - 2¹⁰ = 73919467 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73920401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36960245 + 36960246.

It is an arithmetic number, because the mean of its divisors is an integer number (36960246).

Almost surely, 2^73920491 is an apocalyptic number.

73920491 is a deficient number, since it is larger than the sum of its proper divisors (1).

73920491 is an equidigital number, since it uses as much as digits as its factorization.

73920491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 73920491 is about 8597.7026582687. The cubic root of 73920491 is about 419.6832286437.

The spelling of 73920491 in words is "seventy-three million, nine hundred twenty thousand, four hundred ninety-one".