4778434 has 16 divisors (see below), whose sum is σ = 7587072. Its totient is φ = 2252448.

The previous prime is 4778429. The next prime is 4778437. The reversal of 4778434 is 4348774.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4778393 and 4778402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778437) 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, 2647 + ... + 4069.

It is an arithmetic number, because the mean of its divisors is an integer number (474192).

Almost surely, 2^4778434 is an apocalyptic number.

4778434 is a deficient number, since it is larger than the sum of its proper divisors (2808638).

4778434 is a wasteful number, since it uses less digits than its factorization.

4778434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its digits is 75264, while the sum is 37.

The square root of 4778434 is about 2185.9629457061. The cubic root of 4778434 is about 168.4335222504.

It can be divided in two parts, 477 and 8434, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 4778434 in words is "four million, seven hundred seventy-eight thousand, four hundred thirty-four".