498978 has 24 divisors (see below), whose sum is σ = 1138800. Its totient is φ = 157464.

The previous prime is 498977. The next prime is 498989. The reversal of 498978 is 879894.

It is not an unprimeable number, because it can be changed into a prime (498973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (47450).

2⁴⁹⁸⁹⁷⁸ is an apocalyptic number.

498978 is an abundant number, since it is smaller than the sum of its proper divisors (639822).

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

498978 is a wasteful number, since it uses less digits than its factorization.

498978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1483 counting only the distinct ones).

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

The square root of 498978 is about 706.3837483974. The cubic root of 498978 is about 79.3159382492.

The spelling of 498978 in words is "four hundred ninety-eight thousand, nine hundred seventy-eight".