4991440654 has 12 divisors (see below), whose sum is σ = 7514138232. Its totient is φ = 2486760080.

The previous prime is 4991440621. The next prime is 4991440679. The reversal of 4991440654 is 4560441994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142119 + ... + 173725.

It is an arithmetic number, because the mean of its divisors is an integer number (626178186).

Almost surely, 2^4991440654 is an apocalyptic number.

4991440654 is a deficient number, since it is larger than the sum of its proper divisors (2522697578).

4991440654 is an equidigital number, since it uses as much as digits as its factorization.

4991440654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32171 (or 31890 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 4991440654 is about 70650.1284782979. The cubic root of 4991440654 is about 1708.9996376415. Note that the first 3 decimals are identical.

The spelling of 4991440654 in words is "four billion, nine hundred ninety-one million, four hundred forty thousand, six hundred fifty-four".