42955489 has 2 divisors, whose sum is σ = 42955490. Its totient is φ = 42955488.

The previous prime is 42955469. The next prime is 42955499. The reversal of 42955489 is 98455924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 2505889 = 6360^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 42955489 - 2⁵ = 42955457 is a prime.

It is not a weakly prime, because it can be changed into another prime (42955459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21477744 + 21477745.

It is an arithmetic number, because the mean of its divisors is an integer number (21477745).

Almost surely, 2^42955489 is an apocalyptic number.

It is an amenable number.

42955489 is a deficient number, since it is larger than the sum of its proper divisors (1).

42955489 is an equidigital number, since it uses as much as digits as its factorization.

42955489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The square root of 42955489 is about 6554.0437136168. The cubic root of 42955489 is about 350.2188807763.

The spelling of 42955489 in words is "forty-two million, nine hundred fifty-five thousand, four hundred eighty-nine".