109045405 has 32 divisors (see below), whose sum is σ = 154091520. Its totient is φ = 72532800.

The previous prime is 109045403. The next prime is 109045411. The reversal of 109045405 is 504540901.

It is not a de Polignac number, because 109045405 - 2¹ = 109045403 is a prime.

It is a super-2 number, since 2×109045405² = 23781800703228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109045403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248176 + ... + 248614.

It is an arithmetic number, because the mean of its divisors is an integer number (4815360).

Almost surely, 2^109045405 is an apocalyptic number.

It is an amenable number.

109045405 is a deficient number, since it is larger than the sum of its proper divisors (45046115).

109045405 is a wasteful number, since it uses less digits than its factorization.

109045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 109045405 is about 10442.4807876290. The cubic root of 109045405 is about 477.7519370777.

The spelling of 109045405 in words is "one hundred nine million, forty-five thousand, four hundred five".