3940438589895 has 32 divisors (see below), whose sum is σ = 6529458885120. Its totient is φ = 2026811615360.

The previous prime is 3940438589887. The next prime is 3940438589921. The reversal of 3940438589895 is 5989858340493.

3940438589895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3940438589895 - 2³ = 3940438589887 is a prime.

It is a super-2 number, since 2×3940438589895² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4720401 + ... + 5492090.

It is an arithmetic number, because the mean of its divisors is an integer number (204045590160).

Almost surely, 2^{3940438589895} is an apocalyptic number.

3940438589895 is a deficient number, since it is larger than the sum of its proper divisors (2589020295225).

3940438589895 is a wasteful number, since it uses less digits than its factorization.

3940438589895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213415.

The product of its (nonzero) digits is 1343692800, while the sum is 75.

The spelling of 3940438589895 in words is "three trillion, nine hundred forty billion, four hundred thirty-eight million, five hundred eighty-nine thousand, eight hundred ninety-five".