22441994 has 4 divisors (see below), whose sum is σ = 33662994. Its totient is φ = 11220996.

The previous prime is 22441981. The next prime is 22441999. The reversal of 22441994 is 49914422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49914422 = 2 ⋅24957211.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 10156969 = 3505^2 + 3187^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22441999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610497 + ... + 5610500.

Almost surely, 2^22441994 is an apocalyptic number.

22441994 is a deficient number, since it is larger than the sum of its proper divisors (11221000).

22441994 is a wasteful number, since it uses less digits than its factorization.

22441994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220999.

The product of its digits is 20736, while the sum is 35.

The square root of 22441994 is about 4737.2981751205. The cubic root of 22441994 is about 282.0679966139.

It can be divided in two parts, 2244 and 1994, that multiplied together give a triangular number (4474536 = T₂₉₉₁).

The spelling of 22441994 in words is "twenty-two million, four hundred forty-one thousand, nine hundred ninety-four".