4004004439387 has 2 divisors, whose sum is σ = 4004004439388. Its totient is φ = 4004004439386.

The previous prime is 4004004439361. The next prime is 4004004439499. The reversal of 4004004439387 is 7839344004004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4004004439387 - 2²³ = 4003996050779 is a prime.

It is not a weakly prime, because it can be changed into another prime (4004004409387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002002219693 + 2002002219694.

It is an arithmetic number, because the mean of its divisors is an integer number (2002002219694).

Almost surely, 2^{4004004439387} is an apocalyptic number.

4004004439387 is a deficient number, since it is larger than the sum of its proper divisors (1).

4004004439387 is an equidigital number, since it uses as much as digits as its factorization.

4004004439387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 4004004439387 in words is "four trillion, four billion, four million, four hundred thirty-nine thousand, three hundred eighty-seven".