4380989 has 4 divisors (see below), whose sum is σ = 4433856. Its totient is φ = 4328124.

The previous prime is 4380983. The next prime is 4380991. The reversal of 4380989 is 9890834.

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 4380989 - 2¹⁶ = 4315453 is a prime.

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 (4380983) 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, 26309 + ... + 26474.

It is an arithmetic number, because the mean of its divisors is an integer number (1108464).

Almost surely, 2^4380989 is an apocalyptic number.

It is an amenable number.

4380989 is a deficient number, since it is larger than the sum of its proper divisors (52867).

4380989 is an equidigital number, since it uses as much as digits as its factorization.

4380989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52866.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 4380989 is about 2093.0812215487. The cubic root of 4380989 is about 163.6279116379.

The spelling of 4380989 in words is "four million, three hundred eighty thousand, nine hundred eighty-nine".