4231989 has 12 divisors (see below), whose sum is σ = 6132672. Its totient is φ = 2812200.

The previous prime is 4231967. The next prime is 4231991. The reversal of 4231989 is 9891324.

It is not a de Polignac number, because 4231989 - 2¹¹ = 4229941 is a prime.

It is a super-2 number, since 2×4231989² = 35819461792242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3334 + ... + 4424.

It is an arithmetic number, because the mean of its divisors is an integer number (511056).

Almost surely, 2^4231989 is an apocalyptic number.

It is an amenable number.

4231989 is a deficient number, since it is larger than the sum of its proper divisors (1900683).

4231989 is a wasteful number, since it uses less digits than its factorization.

4231989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 1525 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 4231989 is about 2057.1798657385. The cubic root of 4231989 is about 161.7514478377.

The spelling of 4231989 in words is "four million, two hundred thirty-one thousand, nine hundred eighty-nine".