3954778 has 16 divisors (see below), whose sum is σ = 6436584. Its totient is φ = 1815040.

The previous prime is 3954767. The next prime is 3954799. The reversal of 3954778 is 8774593.

It is a happy number.

3954778 is nontrivially palindromic in base 9.

3954778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1814409 + 2140369 = 1347^2 + 1463^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 2812.

Almost surely, 2^3954778 is an apocalyptic number.

3954778 is a deficient number, since it is larger than the sum of its proper divisors (2481806).

3954778 is a wasteful number, since it uses less digits than its factorization.

3954778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897.

The product of its digits is 211680, while the sum is 43.

The square root of 3954778 is about 1988.6623645053. The cubic root of 3954778 is about 158.1396244813.

The spelling of 3954778 in words is "three million, nine hundred fifty-four thousand, seven hundred seventy-eight".