5780989 has 4 divisors (see below), whose sum is σ = 5823324. Its totient is φ = 5738656.

The previous prime is 5780987. The next prime is 5781007. The reversal of 5780989 is 9890875.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1800964 + 3980025 = 1342^2 + 1995^2 .

It is not a de Polignac number, because 5780989 - 2¹ = 5780987 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 (5780987) 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, 20962 + ... + 21235.

It is an arithmetic number, because the mean of its divisors is an integer number (1455831).

Almost surely, 2^5780989 is an apocalyptic number.

It is an amenable number.

5780989 is a deficient number, since it is larger than the sum of its proper divisors (42335).

5780989 is a wasteful number, since it uses less digits than its factorization.

5780989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42334.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 5780989 is about 2404.3687321208. The cubic root of 5780989 is about 179.4736578844.

The spelling of 5780989 in words is "five million, seven hundred eighty thousand, nine hundred eighty-nine".