109579143 has 16 divisors (see below), whose sum is σ = 149306976. Its totient is φ = 71460480.

The previous prime is 109579111. The next prime is 109579147. The reversal of 109579143 is 341975901.

It is a happy number.

It is not a de Polignac number, because 109579143 - 2⁵ = 109579111 is a prime.

It is a super-2 number, since 2×109579143² = 24015177161228898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109579147) 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 15 ways as a sum of consecutive naturals, for example, 66121 + ... + 67757.

It is an arithmetic number, because the mean of its divisors is an integer number (9331686).

Almost surely, 2^109579143 is an apocalyptic number.

109579143 is a deficient number, since it is larger than the sum of its proper divisors (39727833).

109579143 is a wasteful number, since it uses less digits than its factorization.

109579143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 109579143 is about 10468.0056839878. The cubic root of 109579143 is about 478.5301433543.

It can be divided in two parts, 10957 and 9143, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 109579143 in words is "one hundred nine million, five hundred seventy-nine thousand, one hundred forty-three".