4778669 has 8 divisors (see below), whose sum is σ = 5512320. Its totient is φ = 4057776.

The previous prime is 4778663. The next prime is 4778693. The reversal of 4778669 is 9668774.

It is a happy number.

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 4778669 - 2⁸ = 4778413 is a prime.

It is a super-2 number, since 2×4778669² = 45671354823122, 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 (4778663) 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, 2369 + ... + 3894.

It is an arithmetic number, because the mean of its divisors is an integer number (689040).

Almost surely, 2^4778669 is an apocalyptic number.

It is an amenable number.

4778669 is a deficient number, since it is larger than the sum of its proper divisors (733651).

4778669 is a wasteful number, since it uses less digits than its factorization.

4778669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379.

The product of its digits is 508032, while the sum is 47.

The square root of 4778669 is about 2186.0166971000. The cubic root of 4778669 is about 168.4362833523.

The spelling of 4778669 in words is "four million, seven hundred seventy-eight thousand, six hundred sixty-nine".