42869089 has 2 divisors, whose sum is σ = 42869090. Its totient is φ = 42869088.

The previous prime is 42869083. The next prime is 42869093. The reversal of 42869089 is 98096824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39690000 + 3179089 = 6300^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 42869089 - 2⁷ = 42868961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42869083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21434544 + 21434545.

It is an arithmetic number, because the mean of its divisors is an integer number (21434545).

Almost surely, 2^42869089 is an apocalyptic number.

It is an amenable number.

42869089 is a deficient number, since it is larger than the sum of its proper divisors (1).

42869089 is an equidigital number, since it uses as much as digits as its factorization.

42869089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 42869089 is about 6547.4490452389. The cubic root of 42869089 is about 349.9839149070.

The spelling of 42869089 in words is "forty-two million, eight hundred sixty-nine thousand, eighty-nine".