4660990991 has 2 divisors, whose sum is σ = 4660990992. Its totient is φ = 4660990990.

The previous prime is 4660990979. The next prime is 4660991017. The reversal of 4660990991 is 1990990664.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4660990991 - 2⁶ = 4660990927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4660990921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330495495 + 2330495496.

It is an arithmetic number, because the mean of its divisors is an integer number (2330495496).

Almost surely, 2^4660990991 is an apocalyptic number.

4660990991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4660990991 is an equidigital number, since it uses as much as digits as its factorization.

4660990991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 4660990991 is about 68271.4507755621. The cubic root of 4660990991 is about 1670.4215641252.

The spelling of 4660990991 in words is "four billion, six hundred sixty million, nine hundred ninety thousand, nine hundred ninety-one".