4490856917 has 2 divisors, whose sum is σ = 4490856918. Its totient is φ = 4490856916.

The previous prime is 4490856883. The next prime is 4490856947. The reversal of 4490856917 is 7196580944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3760019761 + 730837156 = 61319^2 + 27034^2 .

It is a cyclic number.

It is not a de Polignac number, because 4490856917 - 2¹⁴ = 4490840533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4490856947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245428458 + 2245428459.

It is an arithmetic number, because the mean of its divisors is an integer number (2245428459).

Almost surely, 2^4490856917 is an apocalyptic number.

It is an amenable number.

4490856917 is a deficient number, since it is larger than the sum of its proper divisors (1).

4490856917 is an equidigital number, since it uses as much as digits as its factorization.

4490856917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 4490856917 is about 67013.8561567681. The cubic root of 4490856917 is about 1649.8447257617.

The spelling of 4490856917 in words is "four billion, four hundred ninety million, eight hundred fifty-six thousand, nine hundred seventeen".