109491040 has 48 divisors (see below), whose sum is σ = 269928288. Its totient is φ = 41890816.

The previous prime is 109491013. The next prime is 109491049. The reversal of 109491040 is 40194901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109491049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11197 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (5623506).

Almost surely, 2^109491040 is an apocalyptic number.

109491040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109491040 is an abundant number, since it is smaller than the sum of its proper divisors (160437248).

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

109491040 is a wasteful number, since it uses less digits than its factorization.

109491040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29791 (or 29783 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 109491040 is about 10463.7966341094. The cubic root of 109491040 is about 478.4018608966.

The spelling of 109491040 in words is "one hundred nine million, four hundred ninety-one thousand, forty".