109040090 has 16 divisors (see below), whose sum is σ = 196658280. Its totient is φ = 43530240.

The previous prime is 109040089. The next prime is 109040119. The reversal of 109040090 is 90040901.

It can be written as a sum of positive squares in 4 ways, for example, as 79370281 + 29669809 = 8909^2 + 5447^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255 + ... + 15674.

Almost surely, 2^109040090 is an apocalyptic number.

109040090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109040090 is a deficient number, since it is larger than the sum of its proper divisors (87618190).

109040090 is a wasteful number, since it uses less digits than its factorization.

109040090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21457.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 109040090 is about 10442.2262951920. The cubic root of 109040090 is about 477.7441748897.

Adding to 109040090 its reverse (90040901), we get a palindrome (199080991).

The spelling of 109040090 in words is "one hundred nine million, forty thousand, ninety".