4158978 has 16 divisors (see below), whose sum is σ = 8401536. Its totient is φ = 1372400.

The previous prime is 4158971. The next prime is 4158989. The reversal of 4158978 is 8798514.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4158971) 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, 2826 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (525096).

Almost surely, 2^4158978 is an apocalyptic number.

4158978 is an abundant number, since it is smaller than the sum of its proper divisors (4242558).

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

4158978 is a wasteful number, since it uses less digits than its factorization.

4158978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969.

The product of its digits is 80640, while the sum is 42.

The square root of 4158978 is about 2039.3572516850. The cubic root of 4158978 is about 160.8158588106.

The spelling of 4158978 in words is "four million, one hundred fifty-eight thousand, nine hundred seventy-eight".