19669941 has 12 divisors (see below), whose sum is σ = 28453932. Its totient is φ = 13094016.

The previous prime is 19669931. The next prime is 19669957. The reversal of 19669941 is 14996691.

It can be written as a sum of positive squares in 2 ways, for example, as 17189316 + 2480625 = 4146^2 + 1575^2 .

It is not a de Polignac number, because 19669941 - 2¹³ = 19661749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19669931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7675 + ... + 9911.

It is an arithmetic number, because the mean of its divisors is an integer number (2371161).

Almost surely, 2^19669941 is an apocalyptic number.

It is an amenable number.

19669941 is a deficient number, since it is larger than the sum of its proper divisors (8783991).

19669941 is a wasteful number, since it uses less digits than its factorization.

19669941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220 (or 3217 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 19669941 is about 4435.0807207987. The cubic root of 19669941 is about 269.9402748554.

The spelling of 19669941 in words is "nineteen million, six hundred sixty-nine thousand, nine hundred forty-one".