73989751 has 16 divisors (see below), whose sum is σ = 83721600. Its totient is φ = 64795680.

The previous prime is 73989737. The next prime is 73989761. The reversal of 73989751 is 15798937.

It is a cyclic number.

It is not a de Polignac number, because 73989751 - 2⁷ = 73989623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73989695 and 73989704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73989731) 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 in 15 ways as a sum of consecutive naturals, for example, 42700 + ... + 44398.

It is an arithmetic number, because the mean of its divisors is an integer number (5232600).

Almost surely, 2^73989751 is an apocalyptic number.

73989751 is a deficient number, since it is larger than the sum of its proper divisors (9731849).

73989751 is a wasteful number, since it uses less digits than its factorization.

73989751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854.

The product of its digits is 476280, while the sum is 49.

The square root of 73989751 is about 8601.7295353900. The cubic root of 73989751 is about 419.8142621660.

The spelling of 73989751 in words is "seventy-three million, nine hundred eighty-nine thousand, seven hundred fifty-one".