109729408 has 32 divisors (see below), whose sum is σ = 230112000. Its totient is φ = 51975936.

The previous prime is 109729393. The next prime is 109729409. The reversal of 109729408 is 804927901.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109729409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20128 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (7191000).

Almost surely, 2^109729408 is an apocalyptic number.

It is an amenable number.

109729408 is an abundant number, since it is smaller than the sum of its proper divisors (120382592).

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

109729408 is an equidigital number, since it uses as much as digits as its factorization.

109729408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45152 (or 45140 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 109729408 is about 10475.1805712360. The cubic root of 109729408 is about 478.7487782966.

The spelling of 109729408 in words is "one hundred nine million, seven hundred twenty-nine thousand, four hundred eight".