4387978 has 32 divisors (see below), whose sum is σ = 7945344. Its totient is φ = 1778112.

The previous prime is 4387969. The next prime is 4387979. The reversal of 4387978 is 8797834.

It is not an unprimeable number, because it can be changed into a prime (4387979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22176 + ... + 22372.

It is an arithmetic number, because the mean of its divisors is an integer number (248292).

Almost surely, 2^4387978 is an apocalyptic number.

4387978 is a deficient number, since it is larger than the sum of its proper divisors (3557366).

4387978 is a wasteful number, since it uses less digits than its factorization.

4387978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

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

The square root of 4387978 is about 2094.7501044277. The cubic root of 4387978 is about 163.7148773806.

The spelling of 4387978 in words is "four million, three hundred eighty-seven thousand, nine hundred seventy-eight".