4091293838 has 8 divisors (see below), whose sum is σ = 6143290032. Its totient is φ = 2043530496.

The previous prime is 4091293799. The next prime is 4091293849. The reversal of 4091293838 is 8383921904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4091293792 and 4091293801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055795 + ... + 1059662.

It is an arithmetic number, because the mean of its divisors is an integer number (767911254).

Almost surely, 2^4091293838 is an apocalyptic number.

4091293838 is a deficient number, since it is larger than the sum of its proper divisors (2051996194).

4091293838 is a wasteful number, since it uses less digits than its factorization.

4091293838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116426.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 4091293838 is about 63963.2225423329. Note that the first 3 decimals coincide. The cubic root of 4091293838 is about 1599.3869836514.

The spelling of 4091293838 in words is "four billion, ninety-one million, two hundred ninety-three thousand, eight hundred thirty-eight".