109091430 has 96 divisors (see below), whose sum is σ = 331778304. Its totient is φ = 24349248.

The previous prime is 109091401. The next prime is 109091441. The reversal of 109091430 is 34190901.

It is a junction number, because it is equal to n+sod(n) for n = 109091394 and 109091403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25077 + ... + 29103.

It is an arithmetic number, because the mean of its divisors is an integer number (3456024).

Almost surely, 2^109091430 is an apocalyptic number.

109091430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109091430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165889152).

109091430 is an abundant number, since it is smaller than the sum of its proper divisors (222686874).

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

109091430 is a wasteful number, since it uses less digits than its factorization.

109091430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 109091430 is about 10444.6842939363. The cubic root of 109091430 is about 477.8191428441.

The spelling of 109091430 in words is "one hundred nine million, ninety-one thousand, four hundred thirty".