109389456 has 120 divisors (see below), whose sum is σ = 340531776. Its totient is φ = 32497920.

The previous prime is 109389443. The next prime is 109389461. The reversal of 109389456 is 654983901.

It is a happy 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, 83301 + ... + 84603.

Almost surely, 2^109389456 is an apocalyptic number.

109389456 is a gapful number since it is divisible by the number (16) 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 109389456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170265888).

109389456 is an abundant number, since it is smaller than the sum of its proper divisors (231142320).

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

109389456 is a wasteful number, since it uses less digits than its factorization.

109389456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 109389456 is about 10458.9414378320. The cubic root of 109389456 is about 478.2538639712.

The spelling of 109389456 in words is "one hundred nine million, three hundred eighty-nine thousand, four hundred fifty-six".