4098978 has 32 divisors (see below), whose sum is σ = 9811200. Its totient is φ = 1261008.

The previous prime is 4098973. The next prime is 4099001. The reversal of 4098978 is 8798904.

It is not an unprimeable number, because it can be changed into a prime (4098973) 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, 2218 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (306600).

Almost surely, 2^4098978 is an apocalyptic number.

4098978 is an abundant number, since it is smaller than the sum of its proper divisors (5712222).

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

4098978 is a wasteful number, since it uses less digits than its factorization.

4098978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863 (or 5857 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4098978 is about 2024.5932924911. The cubic root of 4098978 is about 160.0387666481.

The spelling of 4098978 in words is "four million, ninety-eight thousand, nine hundred seventy-eight".