20446949 has 8 divisors (see below), whose sum is σ = 21346560. Its totient is φ = 19562400.

The previous prime is 20446897. The next prime is 20446957. The reversal of 20446949 is 94964402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20446949 - 2¹² = 20442853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (2668320).

Almost surely, 2^20446949 is an apocalyptic number.

It is an amenable number.

20446949 is a deficient number, since it is larger than the sum of its proper divisors (899611).

20446949 is an equidigital number, since it uses as much as digits as its factorization.

20446949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 20446949 is about 4521.8302710296. The cubic root of 20446949 is about 273.4488940602.

The spelling of 20446949 in words is "twenty million, four hundred forty-six thousand, nine hundred forty-nine".