40143960 has 96 divisors (see below), whose sum is σ = 137358000. Its totient is φ = 10139904.

The previous prime is 40143923. The next prime is 40143967. The reversal of 40143960 is 6934104.

It is a super-2 number, since 2×40143960² = 3223075048963200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3906 + ... + 9774.

Almost surely, 2^40143960 is an apocalyptic number.

40143960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40143960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68679000).

40143960 is an abundant number, since it is smaller than the sum of its proper divisors (97214040).

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

40143960 is a wasteful number, since it uses less digits than its factorization.

40143960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905 (or 5898 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40143960 is about 6335.9261359331. The cubic root of 40143960 is about 342.4049783464.

The spelling of 40143960 in words is "forty million, one hundred forty-three thousand, nine hundred sixty".