40140169 has 8 divisors (see below), whose sum is σ = 40847328. Its totient is φ = 39436320.

The previous prime is 40140167. The next prime is 40140173. The reversal of 40140169 is 96104104.

40140169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40140169 - 2¹ = 40140167 is a prime.

It is a super-2 number, since 2×40140169² = 3222466334697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40140161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40854 + ... + 41824.

It is an arithmetic number, because the mean of its divisors is an integer number (5105916).

Almost surely, 2^40140169 is an apocalyptic number.

It is an amenable number.

40140169 is a deficient number, since it is larger than the sum of its proper divisors (707159).

40140169 is an equidigital number, since it uses as much as digits as its factorization.

40140169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40140169 is about 6335.6269618720. The cubic root of 40140169 is about 342.3941996544.

The spelling of 40140169 in words is "forty million, one hundred forty thousand, one hundred sixty-nine".