20444949 has 12 divisors (see below), whose sum is σ = 33750496. Its totient is φ = 11682792.

The previous prime is 20444939. The next prime is 20444987. The reversal of 20444949 is 94944402.

It is a happy number.

20444949 is a `hidden beast` number, since 204 + 449 + 4 + 9 = 666.

It is not a de Polignac number, because 20444949 - 2⁴ = 20444933 is a prime.

It is a super-2 number, since 2×20444949² = 835991879225202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444929) 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, 162199 + ... + 162324.

Almost surely, 2^20444949 is an apocalyptic number.

It is an amenable number.

20444949 is a deficient number, since it is larger than the sum of its proper divisors (13305547).

20444949 is a wasteful number, since it uses less digits than its factorization.

20444949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324536 (or 324533 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20444949 is about 4521.6091162328. The cubic root of 20444949 is about 273.4399780499.

The spelling of 20444949 in words is "twenty million, four hundred forty-four thousand, nine hundred forty-nine".