42922889 has 2 divisors, whose sum is σ = 42922890. Its totient is φ = 42922888.

The previous prime is 42922801. The next prime is 42922897. The reversal of 42922889 is 98822924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 2917264 = 6325^2 + 1708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42922889 is a prime.

It is not a weakly prime, because it can be changed into another prime (42922289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21461444 + 21461445.

It is an arithmetic number, because the mean of its divisors is an integer number (21461445).

Almost surely, 2^42922889 is an apocalyptic number.

It is an amenable number.

42922889 is a deficient number, since it is larger than the sum of its proper divisors (1).

42922889 is an equidigital number, since it uses as much as digits as its factorization.

42922889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 42922889 is about 6551.5562273402. The cubic root of 42922889 is about 350.1302617177.

The spelling of 42922889 in words is "forty-two million, nine hundred twenty-two thousand, eight hundred eighty-nine".