73963987 has 4 divisors (see below), whose sum is σ = 74900320. Its totient is φ = 73027656.

The previous prime is 73963973. The next prime is 73964003. The reversal of 73963987 is 78936937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78936937 = 2917 ⋅27061.

It is a cyclic number.

It is not a de Polignac number, because 73963987 - 2¹⁵ = 73931219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73963187) 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 in 3 ways as a sum of consecutive naturals, for example, 468048 + ... + 468205.

It is an arithmetic number, because the mean of its divisors is an integer number (18725080).

Almost surely, 2^73963987 is an apocalyptic number.

73963987 is a deficient number, since it is larger than the sum of its proper divisors (936333).

73963987 is an equidigital number, since it uses as much as digits as its factorization.

73963987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936332.

The product of its digits is 1714608, while the sum is 52.

The square root of 73963987 is about 8600.2317992017. The cubic root of 73963987 is about 419.7655286132.

The spelling of 73963987 in words is "seventy-three million, nine hundred sixty-three thousand, nine hundred eighty-seven".