20949441 has 4 divisors (see below), whose sum is σ = 27932592. Its totient is φ = 13966292.

The previous prime is 20949421. The next prime is 20949499. The reversal of 20949441 is 14494902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20949441 - 2¹¹ = 20947393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20949421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3491571 + ... + 3491576.

It is an arithmetic number, because the mean of its divisors is an integer number (6983148).

Almost surely, 2^20949441 is an apocalyptic number.

It is an amenable number.

20949441 is a deficient number, since it is larger than the sum of its proper divisors (6983151).

20949441 is an equidigital number, since it uses as much as digits as its factorization.

20949441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6983150.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20949441 is about 4577.0559314913. The cubic root of 20949441 is about 275.6708294791.

The spelling of 20949441 in words is "twenty million, nine hundred forty-nine thousand, four hundred forty-one".