4001992449381 has 12 divisors (see below), whose sum is σ = 5815270467552. Its totient is φ = 2652018947496.

The previous prime is 4001992449337. The next prime is 4001992449439. The reversal of 4001992449381 is 1839442991004.

4001992449381 is a `hidden beast` number, since 4 + 0 + 0 + 19 + 9 + 244 + 9 + 381 = 666.

It is not a de Polignac number, because 4001992449381 - 2¹⁵ = 4001992416613 is a prime.

It is a super-2 number, since 2×4001992449381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001992449311) 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 11 ways as a sum of consecutive naturals, for example, 1331333311 + ... + 1331336316.

It is an arithmetic number, because the mean of its divisors is an integer number (484605872296).

Almost surely, 2^{4001992449381} is an apocalyptic number.

It is an amenable number.

4001992449381 is a deficient number, since it is larger than the sum of its proper divisors (1813278018171).

4001992449381 is a wasteful number, since it uses less digits than its factorization.

4001992449381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662669800 (or 2662669797 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 4001992449381 in words is "four trillion, one billion, nine hundred ninety-two million, four hundred forty-nine thousand, three hundred eighty-one".