109569438 has 48 divisors (see below), whose sum is σ = 267351552. Its totient is φ = 32130000.

The previous prime is 109569419. The next prime is 109569451. The reversal of 109569438 is 834965901.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 109569393 and 109569402.

It is a congruent 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, 2788 + ... + 15063.

It is an arithmetic number, because the mean of its divisors is an integer number (5569824).

Almost surely, 2^109569438 is an apocalyptic number.

109569438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109569438 is an abundant number, since it is smaller than the sum of its proper divisors (157782114).

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

109569438 is a wasteful number, since it uses less digits than its factorization.

109569438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17901 (or 17898 counting only the distinct ones).

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

The square root of 109569438 is about 10467.5421183772. The cubic root of 109569438 is about 478.5160157505.

The spelling of 109569438 in words is "one hundred nine million, five hundred sixty-nine thousand, four hundred thirty-eight".