40143846 has 32 divisors (see below), whose sum is σ = 84821760. Its totient is φ = 12630816.

The previous prime is 40143841. The next prime is 40143847. The reversal of 40143846 is 64834104.

40143846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40143846² = 3223056743343432, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143841) 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 15 ways as a sum of consecutive naturals, for example, 44815 + ... + 45701.

It is an arithmetic number, because the mean of its divisors is an integer number (2650680).

Almost surely, 2^40143846 is an apocalyptic number.

40143846 is an abundant number, since it is smaller than the sum of its proper divisors (44677914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40143846 is a wasteful number, since it uses less digits than its factorization.

40143846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40143846 is about 6335.9171396097. The cubic root of 40143846 is about 342.4046542279.

The spelling of 40143846 in words is "forty million, one hundred forty-three thousand, eight hundred forty-six".