4541989 has 2 divisors, whose sum is σ = 4541990. Its totient is φ = 4541988.

The previous prime is 4541981. The next prime is 4542001. The reversal of 4541989 is 9891454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4368100 + 173889 = 2090^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 4541989 - 2³ = 4541981 is a prime.

It is a super-2 number, since 2×4541989² = 41259328152242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4541981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270994 + 2270995.

It is an arithmetic number, because the mean of its divisors is an integer number (2270995).

Almost surely, 2^4541989 is an apocalyptic number.

It is an amenable number.

4541989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4541989 is an equidigital number, since it uses as much as digits as its factorization.

4541989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 4541989 is about 2131.1942661334. The cubic root of 4541989 is about 165.6082721447.

The spelling of 4541989 in words is "four million, five hundred forty-one thousand, nine hundred eighty-nine".