22239454 has 4 divisors (see below), whose sum is σ = 33359184. Its totient is φ = 11119726.

The previous prime is 22239439. The next prime is 22239461. The reversal of 22239454 is 45493222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45493222 = 2 ⋅22746611.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5559862 + ... + 5559865.

It is an arithmetic number, because the mean of its divisors is an integer number (8339796).

Almost surely, 2^22239454 is an apocalyptic number.

22239454 is a deficient number, since it is larger than the sum of its proper divisors (11119730).

22239454 is a wasteful number, since it uses less digits than its factorization.

22239454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11119729.

The product of its digits is 17280, while the sum is 31.

The square root of 22239454 is about 4715.8725597709. The cubic root of 22239454 is about 281.2168722133.

The spelling of 22239454 in words is "twenty-two million, two hundred thirty-nine thousand, four hundred fifty-four".