7878479 has 8 divisors (see below), whose sum is σ = 9022080. Its totient is φ = 6739416.

The previous prime is 7878461. The next prime is 7878487. The reversal of 7878479 is 9748787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7878479 - 2¹⁶ = 7812943 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 (7878419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412 + ... + 5934.

It is an arithmetic number, because the mean of its divisors is an integer number (1127760).

Almost surely, 2^7878479 is an apocalyptic number.

7878479 is a deficient number, since it is larger than the sum of its proper divisors (1143601).

7878479 is a wasteful number, since it uses less digits than its factorization.

7878479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its digits is 790272, while the sum is 50.

The square root of 7878479 is about 2806.8628395417. The cubic root of 7878479 is about 198.9821537324.

The spelling of 7878479 in words is "seven million, eight hundred seventy-eight thousand, four hundred seventy-nine".