4491653 has 2 divisors, whose sum is σ = 4491654. Its totient is φ = 4491652.

The previous prime is 4491631. The next prime is 4491659. The reversal of 4491653 is 3561944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3602404 + 889249 = 1898^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491653 - 2¹² = 4487557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4491659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245826 + 2245827.

It is an arithmetic number, because the mean of its divisors is an integer number (2245827).

Almost surely, 2^4491653 is an apocalyptic number.

It is an amenable number.

4491653 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491653 is an equidigital number, since it uses as much as digits as its factorization.

4491653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 4491653 is about 2119.3520236148. The cubic root of 4491653 is about 164.9942207954.

The spelling of 4491653 in words is "four million, four hundred ninety-one thousand, six hundred fifty-three".