42486889 has 2 divisors, whose sum is σ = 42486890. Its totient is φ = 42486888.

The previous prime is 42486887. The next prime is 42486923. The reversal of 42486889 is 98868424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27741289 + 14745600 = 5267^2 + 3840^2 .

It is a cyclic number.

It is not a de Polignac number, because 42486889 - 2¹ = 42486887 is a prime.

Together with 42486887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42486883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21243444 + 21243445.

It is an arithmetic number, because the mean of its divisors is an integer number (21243445).

Almost surely, 2^42486889 is an apocalyptic number.

It is an amenable number.

42486889 is a deficient number, since it is larger than the sum of its proper divisors (1).

42486889 is an equidigital number, since it uses as much as digits as its factorization.

42486889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 884736, while the sum is 49.

The square root of 42486889 is about 6518.1967598409. The cubic root of 42486889 is about 348.9407129116.

The spelling of 42486889 in words is "forty-two million, four hundred eighty-six thousand, eight hundred eighty-nine".