73940987 has 2 divisors, whose sum is σ = 73940988. Its totient is φ = 73940986.

The previous prime is 73940963. The next prime is 73941013. The reversal of 73940987 is 78904937.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73940987 is a prime.

It is not a weakly prime, because it can be changed into another prime (73940387) 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, 36970493 + 36970494.

It is an arithmetic number, because the mean of its divisors is an integer number (36970494).

Almost surely, 2^73940987 is an apocalyptic number.

73940987 is a deficient number, since it is larger than the sum of its proper divisors (1).

73940987 is an equidigital number, since it uses as much as digits as its factorization.

73940987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 73940987 is about 8598.8945219720. The cubic root of 73940987 is about 419.7220137061.

The spelling of 73940987 in words is "seventy-three million, nine hundred forty thousand, nine hundred eighty-seven".