16222589 has 4 divisors (see below), whose sum is σ = 16293660. Its totient is φ = 16151520.

The previous prime is 16222553. The next prime is 16222631. The reversal of 16222589 is 98522261.

16222589 = T₂ + T₃ + ... + T₄₅₉.

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: 98522261 = 197 ⋅500113.

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 4202500 = 3467^2 + 2050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16222589 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 (16222529) 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, 35192 + ... + 35649.

It is an arithmetic number, because the mean of its divisors is an integer number (4073415).

Almost surely, 2^16222589 is an apocalyptic number.

It is an amenable number.

16222589 is a deficient number, since it is larger than the sum of its proper divisors (71071).

16222589 is an equidigital number, since it uses as much as digits as its factorization.

16222589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71070.

The product of its digits is 17280, while the sum is 35.

The square root of 16222589 is about 4027.7275230581. The cubic root of 16222589 is about 253.1473517629.

The spelling of 16222589 in words is "sixteen million, two hundred twenty-two thousand, five hundred eighty-nine".