4311989 has 4 divisors (see below), whose sum is σ = 4704000. Its totient is φ = 3919980.

The previous prime is 4311977. The next prime is 4312003. The reversal of 4311989 is 9891134.

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.

It is a cyclic number.

It is not a de Polignac number, because 4311989 - 2²⁰ = 3263413 is a prime.

It is a super-2 number, since 2×4311989² = 37186498272242, which contains 22 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 (4311959) 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, 195989 + ... + 196010.

It is an arithmetic number, because the mean of its divisors is an integer number (1176000).

Almost surely, 2^4311989 is an apocalyptic number.

It is an amenable number.

4311989 is a deficient number, since it is larger than the sum of its proper divisors (392011).

4311989 is a wasteful number, since it uses less digits than its factorization.

4311989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392010.

The product of its digits is 7776, while the sum is 35.

The square root of 4311989 is about 2076.5329277428. The cubic root of 4311989 is about 162.7643224827.

The spelling of 4311989 in words is "four million, three hundred eleven thousand, nine hundred eighty-nine".