1099024398 has 48 divisors (see below), whose sum is σ = 2535348816. Its totient is φ = 342869760.

The previous prime is 1099024363. The next prime is 1099024441. The reversal of 1099024398 is 8934209901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45465 + ... + 65307.

It is an arithmetic number, because the mean of its divisors is an integer number (52819767).

Almost surely, 2^1099024398 is an apocalyptic number.

1099024398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099024398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267674408).

1099024398 is an abundant number, since it is smaller than the sum of its proper divisors (1436324418).

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

1099024398 is a wasteful number, since it uses less digits than its factorization.

1099024398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20049 (or 20046 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1099024398 is about 33151.5368874506. The cubic root of 1099024398 is about 1031.9748450241.

The spelling of 1099024398 in words is "one billion, ninety-nine million, twenty-four thousand, three hundred ninety-eight".