109290399 has 16 divisors (see below), whose sum is σ = 157207392. Its totient is φ = 67278848.

The previous prime is 109290373. The next prime is 109290403. The reversal of 109290399 is 993092901.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109290399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109290399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109292399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17514 + ... + 22919.

It is an arithmetic number, because the mean of its divisors is an integer number (9825462).

Almost surely, 2^109290399 is an apocalyptic number.

109290399 is a deficient number, since it is larger than the sum of its proper divisors (47916993).

109290399 is a wasteful number, since it uses less digits than its factorization.

109290399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40506.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 109290399 is about 10454.2048478112. The cubic root of 109290399 is about 478.1094603519.

The spelling of 109290399 in words is "one hundred nine million, two hundred ninety thousand, three hundred ninety-nine".