7998973 has 4 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 7954108.

The previous prime is 7998971. The next prime is 7998979. The reversal of 7998973 is 3798997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3798997 = 71 ⋅53507.

It is a cyclic number.

It is not a de Polignac number, because 7998973 - 2¹ = 7998971 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 7998973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22165 + ... + 22522.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^7998973 is an apocalyptic number.

It is an amenable number.

7998973 is a deficient number, since it is larger than the sum of its proper divisors (44867).

7998973 is a wasteful number, since it uses less digits than its factorization.

7998973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44866.

The product of its digits is 857304, while the sum is 52.

The square root of 7998973 is about 2828.2455692531. The cubic root of 7998973 is about 199.9914413004.

The spelling of 7998973 in words is "seven million, nine hundred ninety-eight thousand, nine hundred seventy-three".