4049778 has 16 divisors (see below), whose sum is σ = 8361216. Its totient is φ = 1306320.

The previous prime is 4049753. The next prime is 4049779. The reversal of 4049778 is 8779404.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4049779) 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, 10701 + ... + 11072.

It is an arithmetic number, because the mean of its divisors is an integer number (522576).

Almost surely, 2^4049778 is an apocalyptic number.

4049778 is an abundant number, since it is smaller than the sum of its proper divisors (4311438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4049778 is a wasteful number, since it uses less digits than its factorization.

4049778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21809.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 4049778 is about 2012.4060226505. The cubic root of 4049778 is about 159.3958728525.

The spelling of 4049778 in words is "four million, forty-nine thousand, seven hundred seventy-eight".