109405400 has 96 divisors (see below), whose sum is σ = 283575600. Its totient is φ = 38976000.

The previous prime is 109405397. The next prime is 109405403. The reversal of 109405400 is 4504901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (109405397) and next prime (109405403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109405403) 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, 74675 + ... + 76125.

Almost surely, 2^109405400 is an apocalyptic number.

109405400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109405400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141787800).

109405400 is an abundant number, since it is smaller than the sum of its proper divisors (174170200).

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

109405400 is a wasteful number, since it uses less digits than its factorization.

109405400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 109405400 is about 10459.7036286885. The cubic root of 109405400 is about 478.2770987187.

The spelling of 109405400 in words is "one hundred nine million, four hundred five thousand, four hundred".