4099394919636 has 48 divisors (see below), whose sum is σ = 10628247268800. Its totient is φ = 1366441011936.

The previous prime is 4099394919511. The next prime is 4099394919637. The reversal of 4099394919636 is 6369194939904.

4099394919636 is a `hidden beast` number, since 4 + 0 + 99 + 394 + 91 + 9 + 63 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4099394919637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6501511 + ... + 7104113.

It is an arithmetic number, because the mean of its divisors is an integer number (221421818100).

Almost surely, 2^{4099394919636} is an apocalyptic number.

It is an amenable number.

4099394919636 is an abundant number, since it is smaller than the sum of its proper divisors (6528852349164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4099394919636 is a wasteful number, since it uses less digits than its factorization.

4099394919636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665605 (or 665597 counting only the distinct ones).

The product of its (nonzero) digits is 306110016, while the sum is 72.

The spelling of 4099394919636 in words is "four trillion, ninety-nine billion, three hundred ninety-four million, nine hundred nineteen thousand, six hundred thirty-six".