3940428143443 has 64 divisors (see below), whose sum is σ = 4519913840640. Its totient is φ = 3403406563200.

The previous prime is 3940428143437. The next prime is 3940428143453. The reversal of 3940428143443 is 3443418240493.

It is not a de Polignac number, because 3940428143443 - 2¹³ = 3940428135251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3940428143453) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4058112948 + ... + 4058113918.

It is an arithmetic number, because the mean of its divisors is an integer number (70623653760).

Almost surely, 2^{3940428143443} is an apocalyptic number.

3940428143443 is a deficient number, since it is larger than the sum of its proper divisors (579485697197).

3940428143443 is a wasteful number, since it uses less digits than its factorization.

3940428143443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 3981312, while the sum is 49.

The spelling of 3940428143443 in words is "three trillion, nine hundred forty billion, four hundred twenty-eight million, one hundred forty-three thousand, four hundred forty-three".