544865887 has 2 divisors, whose sum is σ = 544865888. Its totient is φ = 544865886.

The previous prime is 544865879. The next prime is 544865899. The reversal of 544865887 is 788568445.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 544865887 - 2³ = 544865879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544865807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272432943 + 272432944.

It is an arithmetic number, because the mean of its divisors is an integer number (272432944).

Almost surely, 2^544865887 is an apocalyptic number.

544865887 is a deficient number, since it is larger than the sum of its proper divisors (1).

544865887 is an equidigital number, since it uses as much as digits as its factorization.

544865887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8601600, while the sum is 55.

The square root of 544865887 is about 23342.3624982563. The cubic root of 544865887 is about 816.7639099161.

The spelling of 544865887 in words is "five hundred forty-four million, eight hundred sixty-five thousand, eight hundred eighty-seven".