73439963 has 4 divisors (see below), whose sum is σ = 73662168. Its totient is φ = 73217760.

The previous prime is 73439957. The next prime is 73439981. The reversal of 73439963 is 36993437.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73439963 - 2²⁴ = 56662747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73439903) 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, 110606 + ... + 111267.

It is an arithmetic number, because the mean of its divisors is an integer number (18415542).

Almost surely, 2^73439963 is an apocalyptic number.

73439963 is a deficient number, since it is larger than the sum of its proper divisors (222205).

73439963 is a wasteful number, since it uses less digits than its factorization.

73439963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222204.

The product of its digits is 367416, while the sum is 44.

The square root of 73439963 is about 8569.7119554860. The cubic root of 73439963 is about 418.7718524870.

The spelling of 73439963 in words is "seventy-three million, four hundred thirty-nine thousand, nine hundred sixty-three".