89561093429 has 2 divisors, whose sum is σ = 89561093430. Its totient is φ = 89561093428.

The previous prime is 89561093423. The next prime is 89561093471. The reversal of 89561093429 is 92439016598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67782122500 + 21778970929 = 260350^2 + 147577^2 .

It is a cyclic number.

It is not a de Polignac number, because 89561093429 - 2⁸ = 89561093173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89561093423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44780546714 + 44780546715.

It is an arithmetic number, because the mean of its divisors is an integer number (44780546715).

Almost surely, 2^89561093429 is an apocalyptic number.

It is an amenable number.

89561093429 is a deficient number, since it is larger than the sum of its proper divisors (1).

89561093429 is an equidigital number, since it uses as much as digits as its factorization.

89561093429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 89561093429 in words is "eighty-nine billion, five hundred sixty-one million, ninety-three thousand, four hundred twenty-nine".