40318861 has 8 divisors (see below), whose sum is σ = 44240544. Its totient is φ = 36439920.

The previous prime is 40318847. The next prime is 40318877. The reversal of 40318861 is 16881304.

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

It is not a de Polignac number, because 40318861 - 2¹⁷ = 40187789 is a prime.

It is a super-2 number, since 2×40318861² = 3251221104674642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40318801) 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, 8691 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (5530068).

Almost surely, 2^40318861 is an apocalyptic number.

It is an amenable number.

40318861 is a deficient number, since it is larger than the sum of its proper divisors (3921683).

40318861 is a wasteful number, since it uses less digits than its factorization.

40318861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 40318861 is about 6349.7134581019. The cubic root of 40318861 is about 342.9015263557.

The spelling of 40318861 in words is "forty million, three hundred eighteen thousand, eight hundred sixty-one".