7997869 has 4 divisors (see below), whose sum is σ = 8724960. Its totient is φ = 7270780.

The previous prime is 7997867. The next prime is 7997903. The reversal of 7997869 is 9687997.

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: 9687997 = 11 ⋅880727.

It is not a de Polignac number, because 7997869 - 2¹ = 7997867 is a prime.

It is a super-2 number, since 2×7997869² = 127931817082322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997867) 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, 363529 + ... + 363550.

It is an arithmetic number, because the mean of its divisors is an integer number (2181240).

Almost surely, 2^7997869 is an apocalyptic number.

It is an amenable number.

7997869 is a deficient number, since it is larger than the sum of its proper divisors (727091).

7997869 is a wasteful number, since it uses less digits than its factorization.

7997869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727090.

The product of its digits is 1714608, while the sum is 55.

The square root of 7997869 is about 2828.0503885186. The cubic root of 7997869 is about 199.9822400896.

It can be divided in two parts, 799 and 7869, that added together give a palindrome (8668).

The spelling of 7997869 in words is "seven million, nine hundred ninety-seven thousand, eight hundred sixty-nine".