17994461 has 2 divisors, whose sum is σ = 17994462. Its totient is φ = 17994460.

The previous prime is 17994437. The next prime is 17994479. The reversal of 17994461 is 16449971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14822500 + 3171961 = 3850^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 17994461 - 2¹⁸ = 17732317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17994421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8997230 + 8997231.

It is an arithmetic number, because the mean of its divisors is an integer number (8997231).

Almost surely, 2^17994461 is an apocalyptic number.

It is an amenable number.

17994461 is a deficient number, since it is larger than the sum of its proper divisors (1).

17994461 is an equidigital number, since it uses as much as digits as its factorization.

17994461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 17994461 is about 4241.9878594829. The cubic root of 17994461 is about 262.0472546508.

The spelling of 17994461 in words is "seventeen million, nine hundred ninety-four thousand, four hundred sixty-one".