40456169 has 8 divisors (see below), whose sum is σ = 43741320. Its totient is φ = 37195776.

The previous prime is 40456159. The next prime is 40456177. The reversal of 40456169 is 96165404.

It can be written as a sum of positive squares in 4 ways, for example, as 24552025 + 15904144 = 4955^2 + 3988^2 .

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 40456169 - 2⁸ = 40455913 is a prime.

It is a super-2 number, since 2×40456169² = 3273403220313122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40456159) 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, 2714 + ... + 9395.

It is an arithmetic number, because the mean of its divisors is an integer number (5467665).

Almost surely, 2^40456169 is an apocalyptic number.

It is an amenable number.

40456169 is a deficient number, since it is larger than the sum of its proper divisors (3285151).

40456169 is a wasteful number, since it uses less digits than its factorization.

40456169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12379.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 40456169 is about 6360.5164098523. The cubic root of 40456169 is about 343.2903417016.

The spelling of 40456169 in words is "forty million, four hundred fifty-six thousand, one hundred sixty-nine".