4991846408 has 32 divisors (see below), whose sum is σ = 9920102400. Its totient is φ = 2346776832.

The previous prime is 4991846407. The next prime is 4991846411. The reversal of 4991846408 is 8046481994.

It is a Cunningham number, because it is equal to 70653²-1.

It is a super-2 number, since 2×4991846408² = 49837061122125004928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4991846408.

It is not an unprimeable number, because it can be changed into a prime (4991846401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123641 + ... + 158967.

It is an arithmetic number, because the mean of its divisors is an integer number (310003200).

Almost surely, 2^4991846408 is an apocalyptic number.

It is an amenable number.

4991846408 is a deficient number, since it is larger than the sum of its proper divisors (4928255992).

4991846408 is a wasteful number, since it uses less digits than its factorization.

4991846408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36389 (or 36385 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The square root of 4991846408 is about 70652.9999929232. Note that the first 5 decimals coincide. The cubic root of 4991846408 is about 1709.0459445562.

The spelling of 4991846408 in words is "four billion, nine hundred ninety-one million, eight hundred forty-six thousand, four hundred eight".