79890003 has 16 divisors (see below), whose sum is σ = 124585600. Its totient is φ = 50456520.

The previous prime is 79889977. The next prime is 79890047. The reversal of 79890003 is 30009897.

It is not a de Polignac number, because 79890003 - 2²¹ = 77792851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79890003.

It is not an unprimeable number, because it can be changed into a prime (79890103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77353 + ... + 78378.

It is an arithmetic number, because the mean of its divisors is an integer number (7786600).

Almost surely, 2^79890003 is an apocalyptic number.

79890003 is a deficient number, since it is larger than the sum of its proper divisors (44695597).

79890003 is a wasteful number, since it uses less digits than its factorization.

79890003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155759 (or 155753 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 79890003 is about 8938.1207756441. The cubic root of 79890003 is about 430.6893629654.

The spelling of 79890003 in words is "seventy-nine million, eight hundred ninety thousand, three".