4000243438 has 8 divisors (see below), whose sum is σ = 6001521480. Its totient is φ = 1999736280.

The previous prime is 4000243411. The next prime is 4000243439. The reversal of 4000243438 is 8343420004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000243439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179568 + ... + 200611.

It is an arithmetic number, because the mean of its divisors is an integer number (750190185).

Almost surely, 2^4000243438 is an apocalyptic number.

4000243438 is a deficient number, since it is larger than the sum of its proper divisors (2001278042).

4000243438 is a wasteful number, since it uses less digits than its factorization.

4000243438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385442.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 4000243438 is about 63247.4777204593. The cubic root of 4000243438 is about 1587.4332541264.

The spelling of 4000243438 in words is "four billion, two hundred forty-three thousand, four hundred thirty-eight".