26222989 has 8 divisors (see below), whose sum is σ = 29214360. Its totient is φ = 23370816.

The previous prime is 26222953. The next prime is 26223011. The reversal of 26222989 is 98922262.

It can be written as a sum of positive squares in 4 ways, for example, as 2748964 + 23474025 = 1658^2 + 4845^2 .

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 26222989 - 2⁹ = 26222477 is a prime.

It is a super-3 number, since 3×26222989³ (a number of 23 digits) contains 333 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 (26222909) 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, 34402 + ... + 35155.

It is an arithmetic number, because the mean of its divisors is an integer number (3651795).

Almost surely, 2^26222989 is an apocalyptic number.

26222989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26222989 is a deficient number, since it is larger than the sum of its proper divisors (2991371).

26222989 is a wasteful number, since it uses less digits than its factorization.

26222989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69599.

The product of its digits is 62208, while the sum is 40.

The square root of 26222989 is about 5120.8387008380. The cubic root of 26222989 is about 297.0941253360.

The spelling of 26222989 in words is "twenty-six million, two hundred twenty-two thousand, nine hundred eighty-nine".