4398978 has 16 divisors (see below), whose sum is σ = 8820000. Its totient is φ = 1462656.

The previous prime is 4398959. The next prime is 4398991. The reversal of 4398978 is 8798934.

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, 2898 + ... + 4146.

It is an arithmetic number, because the mean of its divisors is an integer number (551250).

Almost surely, 2^4398978 is an apocalyptic number.

4398978 is an abundant number, since it is smaller than the sum of its proper divisors (4421022).

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

4398978 is a wasteful number, since it uses less digits than its factorization.

4398978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its digits is 435456, while the sum is 48.

The square root of 4398978 is about 2097.3740725011. The cubic root of 4398978 is about 163.8515660720.

The spelling of 4398978 in words is "four million, three hundred ninety-eight thousand, nine hundred seventy-eight".