89897279911 has 2 divisors, whose sum is σ = 89897279912. Its totient is φ = 89897279910.

The previous prime is 89897279869. The next prime is 89897280019. The reversal of 89897279911 is 11997279898.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89897279911 - 2¹⁷ = 89897148839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89897279111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44948639955 + 44948639956.

It is an arithmetic number, because the mean of its divisors is an integer number (44948639956).

Almost surely, 2^89897279911 is an apocalyptic number.

89897279911 is a deficient number, since it is larger than the sum of its proper divisors (1).

89897279911 is an equidigital number, since it uses as much as digits as its factorization.

89897279911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 70.

The spelling of 89897279911 in words is "eighty-nine billion, eight hundred ninety-seven million, two hundred seventy-nine thousand, nine hundred eleven".