498991140 has 144 divisors (see below), whose sum is σ = 1613364480. Its totient is φ = 124400640.

The previous prime is 498991133. The next prime is 498991147. The reversal of 498991140 is 41199894.

It is an interprime number because it is at equal distance from previous prime (498991133) and next prime (498991147).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (498991147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 547285 + ... + 548195.

It is an arithmetic number, because the mean of its divisors is an integer number (11203920).

Almost surely, 2^498991140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 498991140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806682240).

498991140 is an abundant number, since it is smaller than the sum of its proper divisors (1114373340).

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

498991140 is a wasteful number, since it uses less digits than its factorization.

498991140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 498991140 is about 22338.1095887723. The cubic root of 498991140 is about 793.1663447384.

The spelling of 498991140 in words is "four hundred ninety-eight million, nine hundred ninety-one thousand, one hundred forty".