3072989 has 4 divisors (see below), whose sum is σ = 3078300. Its totient is φ = 3067680.

The previous prime is 3072983. The next prime is 3073013. The reversal of 3072989 is 9892703.

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 2788900 + 284089 = 1670^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 3072989 - 2²⁰ = 2024413 is a prime.

It is a super-2 number, since 2×3072989² = 18886522788242, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3072983) 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, 1664 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (769575).

Almost surely, 2^3072989 is an apocalyptic number.

It is an amenable number.

3072989 is a deficient number, since it is larger than the sum of its proper divisors (5311).

3072989 is an equidigital number, since it uses as much as digits as its factorization.

3072989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3072989 is about 1752.9942954842. The cubic root of 3072989 is about 145.3852458592.

The spelling of 3072989 in words is "three million, seventy-two thousand, nine hundred eighty-nine".