16214389 has 4 divisors (see below), whose sum is σ = 16559424. Its totient is φ = 15869356.

The previous prime is 16214381. The next prime is 16214417. The reversal of 16214389 is 98341261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98341261 = 23 ⋅4275707.

It is a cyclic number.

It is not a de Polignac number, because 16214389 - 2³ = 16214381 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 (16214381) 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, 172447 + ... + 172540.

It is an arithmetic number, because the mean of its divisors is an integer number (4139856).

Almost surely, 2^16214389 is an apocalyptic number.

It is an amenable number.

16214389 is a deficient number, since it is larger than the sum of its proper divisors (345035).

16214389 is an equidigital number, since it uses as much as digits as its factorization.

16214389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345034.

The product of its digits is 10368, while the sum is 34.

The square root of 16214389 is about 4026.7094506557. The cubic root of 16214389 is about 253.1046919439.

The spelling of 16214389 in words is "sixteen million, two hundred fourteen thousand, three hundred eighty-nine".