7869487 has 4 divisors (see below), whose sum is σ = 8332416. Its totient is φ = 7406560.

The previous prime is 7869481. The next prime is 7869497. The reversal of 7869487 is 7849687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7849687 = 179 ⋅43853.

It is not a de Polignac number, because 7869487 - 2⁷ = 7869359 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 7869487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7869481) 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 3 ways as a sum of consecutive naturals, for example, 231439 + ... + 231472.

It is an arithmetic number, because the mean of its divisors is an integer number (2083104).

Almost surely, 2^7869487 is an apocalyptic number.

7869487 is a deficient number, since it is larger than the sum of its proper divisors (462929).

7869487 is a wasteful number, since it uses less digits than its factorization.

7869487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462928.

The product of its digits is 677376, while the sum is 49.

The square root of 7869487 is about 2805.2605939556. The cubic root of 7869487 is about 198.9064230120.

The spelling of 7869487 in words is "seven million, eight hundred sixty-nine thousand, four hundred eighty-seven".