541440989 has 2 divisors, whose sum is σ = 541440990. Its totient is φ = 541440988.

The previous prime is 541440983. The next prime is 541441067. The reversal of 541440989 is 989044145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476767225 + 64673764 = 21835^2 + 8042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541440989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541440983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270720494 + 270720495.

It is an arithmetic number, because the mean of its divisors is an integer number (270720495).

Almost surely, 2^541440989 is an apocalyptic number.

It is an amenable number.

541440989 is a deficient number, since it is larger than the sum of its proper divisors (1).

541440989 is an equidigital number, since it uses as much as digits as its factorization.

541440989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 541440989 is about 23268.8845671639. The cubic root of 541440989 is about 815.0489834687.

The spelling of 541440989 in words is "five hundred forty-one million, four hundred forty thousand, nine hundred eighty-nine".