89439927427 has 2 divisors, whose sum is σ = 89439927428. Its totient is φ = 89439927426.

The previous prime is 89439927371. The next prime is 89439927443. The reversal of 89439927427 is 72472993498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89439927427 - 2⁷ = 89439927299 is a prime.

It is not a weakly prime, because it can be changed into another prime (89439927127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44719963713 + 44719963714.

It is an arithmetic number, because the mean of its divisors is an integer number (44719963714).

Almost surely, 2^89439927427 is an apocalyptic number.

89439927427 is a deficient number, since it is larger than the sum of its proper divisors (1).

89439927427 is an equidigital number, since it uses as much as digits as its factorization.

89439927427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54867456, while the sum is 64.

The spelling of 89439927427 in words is "eighty-nine billion, four hundred thirty-nine million, nine hundred twenty-seven thousand, four hundred twenty-seven".