40010861 has 8 divisors (see below), whose sum is σ = 43766784. Its totient is φ = 36274720.

The previous prime is 40010857. The next prime is 40010939. The reversal of 40010861 is 16801004.

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 40010861 - 2² = 40010857 is a prime.

It is a super-2 number, since 2×40010861² = 3201737995922642, 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 (40070861) 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 7 ways as a sum of consecutive naturals, for example, 536 + ... + 8961.

It is an arithmetic number, because the mean of its divisors is an integer number (5470848).

Almost surely, 2^40010861 is an apocalyptic number.

It is an amenable number.

40010861 is a deficient number, since it is larger than the sum of its proper divisors (3755923).

40010861 is a wasteful number, since it uses less digits than its factorization.

40010861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 40010861 is about 6325.4138995010. The cubic root of 40010861 is about 342.0261399488.

Adding to 40010861 its reverse (16801004), we get a palindrome (56811865).

The spelling of 40010861 in words is "forty million, ten thousand, eight hundred sixty-one".