4391489 has 4 divisors (see below), whose sum is σ = 4622640. Its totient is φ = 4160340.

The previous prime is 4391483. The next prime is 4391503. The reversal of 4391489 is 9841934.

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: 9841934 = 2 ⋅4920967.

It is a cyclic number.

It is not a de Polignac number, because 4391489 - 2¹⁶ = 4325953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4391483) 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, 115547 + ... + 115584.

It is an arithmetic number, because the mean of its divisors is an integer number (1155660).

Almost surely, 2^4391489 is an apocalyptic number.

It is an amenable number.

4391489 is a deficient number, since it is larger than the sum of its proper divisors (231151).

4391489 is a wasteful number, since it uses less digits than its factorization.

4391489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231150.

The product of its digits is 31104, while the sum is 38.

The square root of 4391489 is about 2095.5879843137. The cubic root of 4391489 is about 163.7585307212.

The spelling of 4391489 in words is "four million, three hundred ninety-one thousand, four hundred eighty-nine".