19840441 has 2 divisors, whose sum is σ = 19840442. Its totient is φ = 19840440.

The previous prime is 19840417. The next prime is 19840459. The reversal of 19840441 is 14404891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10106041 + 9734400 = 3179^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 19840441 - 2⁵ = 19840409 is a prime.

It is not a weakly prime, because it can be changed into another prime (19840841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9920220 + 9920221.

It is an arithmetic number, because the mean of its divisors is an integer number (9920221).

Almost surely, 2^19840441 is an apocalyptic number.

It is an amenable number.

19840441 is a deficient number, since it is larger than the sum of its proper divisors (1).

19840441 is an equidigital number, since it uses as much as digits as its factorization.

19840441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 19840441 is about 4454.2609937003. The cubic root of 19840441 is about 270.7179838783.

The spelling of 19840441 in words is "nineteen million, eight hundred forty thousand, four hundred forty-one".