40109579 has 8 divisors (see below), whose sum is σ = 42658560. Its totient is φ = 37581696.

The previous prime is 40109569. The next prime is 40109593. The reversal of 40109579 is 97590104.

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

It is not a de Polignac number, because 40109579 - 2²⁰ = 39061003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40109569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259 + ... + 9044.

It is an arithmetic number, because the mean of its divisors is an integer number (5332320).

Almost surely, 2^40109579 is an apocalyptic number.

40109579 is a deficient number, since it is larger than the sum of its proper divisors (2548981).

40109579 is a wasteful number, since it uses less digits than its factorization.

40109579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 40109579 is about 6333.2123760379. The cubic root of 40109579 is about 342.3072003502.

The spelling of 40109579 in words is "forty million, one hundred nine thousand, five hundred seventy-nine".