4778013 has 4 divisors (see below), whose sum is σ = 6370688. Its totient is φ = 3185340.

The previous prime is 4778009. The next prime is 4778021. The reversal of 4778013 is 3108774.

It is a happy number.

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.

It is not a de Polignac number, because 4778013 - 2² = 4778009 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778113) 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, 796333 + ... + 796338.

It is an arithmetic number, because the mean of its divisors is an integer number (1592672).

Almost surely, 2^4778013 is an apocalyptic number.

It is an amenable number.

4778013 is a deficient number, since it is larger than the sum of its proper divisors (1592675).

4778013 is a wasteful number, since it uses less digits than its factorization.

4778013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592674.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 4778013 is about 2185.8666473507. The cubic root of 4778013 is about 168.4285755394.

The spelling of 4778013 in words is "four million, seven hundred seventy-eight thousand, thirteen".