109143994 has 16 divisors (see below), whose sum is σ = 174827520. Its totient is φ = 50989680.

The previous prime is 109143953. The next prime is 109144003. The reversal of 109143994 is 499341901.

It is a super-2 number, since 2×109143994² = 23824822852544072, which contains 22 as substring.

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, 28554 + ... + 32149.

It is an arithmetic number, because the mean of its divisors is an integer number (10926720).

Almost surely, 2^109143994 is an apocalyptic number.

109143994 is a deficient number, since it is larger than the sum of its proper divisors (65683526).

109143994 is a wasteful number, since it uses less digits than its factorization.

109143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60765.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 109143994 is about 10447.2002948158. The cubic root of 109143994 is about 477.8958737494.

The spelling of 109143994 in words is "one hundred nine million, one hundred forty-three thousand, nine hundred ninety-four".