4378978 has 16 divisors (see below), whose sum is σ = 6753240. Its totient is φ = 2128896.

The previous prime is 4378963. The next prime is 4378981. The reversal of 4378978 is 8798734.

It can be written as a sum of positive squares in 4 ways, for example, as 2798929 + 1580049 = 1673^2 + 1257^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12826 + ... + 13162.

Almost surely, 2^4378978 is an apocalyptic number.

4378978 is a deficient number, since it is larger than the sum of its proper divisors (2374262).

4378978 is a wasteful number, since it uses less digits than its factorization.

4378978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its digits is 338688, while the sum is 46.

The square root of 4378978 is about 2092.6007741564. The cubic root of 4378978 is about 163.6028711663.

It can be divided in two parts, 4378 and 978, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 4378978 in words is "four million, three hundred seventy-eight thousand, nine hundred seventy-eight".