109825398 has 48 divisors (see below), whose sum is σ = 246913056. Its totient is φ = 35251200.

The previous prime is 109825393. The next prime is 109825399. The reversal of 109825398 is 893528901.

It is a happy number.

109825398 is a `hidden beast` number, since 109 + 8 + 2 + 539 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109825393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67798 + ... + 69398.

It is an arithmetic number, because the mean of its divisors is an integer number (5144022).

Almost surely, 2^109825398 is an apocalyptic number.

109825398 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 109825398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123456528).

109825398 is an abundant number, since it is smaller than the sum of its proper divisors (137087658).

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

109825398 is a wasteful number, since it uses less digits than its factorization.

109825398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 109825398 is about 10479.7613522446. The cubic root of 109825398 is about 478.8883388824. Note that the first 3 decimals are identical.

The spelling of 109825398 in words is "one hundred nine million, eight hundred twenty-five thousand, three hundred ninety-eight".