109406538 has 40 divisors (see below), whose sum is σ = 255819168. Its totient is φ = 34882056.

The previous prime is 109406513. The next prime is 109406551. The reversal of 109406538 is 835604901.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10956 + ... + 18407.

Almost surely, 2^109406538 is an apocalyptic number.

109406538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109406538 is an abundant number, since it is smaller than the sum of its proper divisors (146412630).

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

109406538 is a wasteful number, since it uses less digits than its factorization.

109406538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29400 (or 29391 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 109406538 is about 10459.7580277940. The cubic root of 109406538 is about 478.2787570081.

The spelling of 109406538 in words is "one hundred nine million, four hundred six thousand, five hundred thirty-eight".