4350989 has 4 divisors (see below), whose sum is σ = 4356924. Its totient is φ = 4345056.

The previous prime is 4350977. The next prime is 4350991. The reversal of 4350989 is 9890534.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9890534 = 2 ⋅4945267.

It can be written as a sum of positive squares in 2 ways, for example, as 4141225 + 209764 = 2035^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 4350989 - 2⁸ = 4350733 is a prime.

It is a super-2 number, since 2×4350989² = 37862210556242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4350919) 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, 1682 + ... + 3395.

It is an arithmetic number, because the mean of its divisors is an integer number (1089231).

Almost surely, 2^4350989 is an apocalyptic number.

It is an amenable number.

4350989 is a deficient number, since it is larger than the sum of its proper divisors (5935).

4350989 is an equidigital number, since it uses as much as digits as its factorization.

4350989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 4350989 is about 2085.9024425893. The cubic root of 4350989 is about 163.2535604710.

The spelling of 4350989 in words is "four million, three hundred fifty thousand, nine hundred eighty-nine".