7973885 has 16 divisors (see below), whose sum is σ = 9927792. Its totient is φ = 6144000.

The previous prime is 7973881. The next prime is 7973899. The reversal of 7973885 is 5883797.

It can be written as a sum of positive squares in 8 ways, for example, as 10201 + 7963684 = 101^2 + 2822^2 .

It is not a de Polignac number, because 7973885 - 2² = 7973881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7973881) 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, 19685 + ... + 20085.

It is an arithmetic number, because the mean of its divisors is an integer number (620487).

Almost surely, 2^7973885 is an apocalyptic number.

It is an amenable number.

7973885 is a deficient number, since it is larger than the sum of its proper divisors (1953907).

7973885 is a wasteful number, since it uses less digits than its factorization.

7973885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544.

The product of its digits is 423360, while the sum is 47.

The square root of 7973885 is about 2823.8068276708. The cubic root of 7973885 is about 199.7821377664.

The spelling of 7973885 in words is "seven million, nine hundred seventy-three thousand, eight hundred eighty-five".