4149778 has 4 divisors (see below), whose sum is σ = 6224670. Its totient is φ = 2074888.

The previous prime is 4149763. The next prime is 4149793. The reversal of 4149778 is 8779414.

4149778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4149763) and next prime (4149793).

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 257049 = 1973^2 + 507^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4149778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1037443 + ... + 1037446.

Almost surely, 2^4149778 is an apocalyptic number.

4149778 is a deficient number, since it is larger than the sum of its proper divisors (2074892).

4149778 is a wasteful number, since it uses less digits than its factorization.

4149778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074891.

The product of its digits is 56448, while the sum is 40.

The square root of 4149778 is about 2037.1003902606. The cubic root of 4149778 is about 160.6971919833.

The spelling of 4149778 in words is "four million, one hundred forty-nine thousand, seven hundred seventy-eight".