109609690 has 8 divisors (see below), whose sum is σ = 197297460. Its totient is φ = 43843872.

The previous prime is 109609681. The next prime is 109609691. The reversal of 109609690 is 96906901.

It can be written as a sum of positive squares in 2 ways, for example, as 105411289 + 4198401 = 10267^2 + 2049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×109609690² = 24028568283792200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109609691) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5480475 + ... + 5480494.

Almost surely, 2^109609690 is an apocalyptic number.

109609690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109609690 is a deficient number, since it is larger than the sum of its proper divisors (87687770).

109609690 is a wasteful number, since it uses less digits than its factorization.

109609690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960976.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 109609690 is about 10469.4646472492. The cubic root of 109609690 is about 478.5746052892.

The spelling of 109609690 in words is "one hundred nine million, six hundred nine thousand, six hundred ninety".