89409811 has 2 divisors, whose sum is σ = 89409812. Its totient is φ = 89409810.

The previous prime is 89409799. The next prime is 89409821. The reversal of 89409811 is 11890498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89409811 - 2⁵ = 89409779 is a prime.

It is a super-2 number, since 2×89409811² = 15988228606111442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89409821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44704905 + 44704906.

It is an arithmetic number, because the mean of its divisors is an integer number (44704906).

Almost surely, 2^89409811 is an apocalyptic number.

89409811 is a deficient number, since it is larger than the sum of its proper divisors (1).

89409811 is an equidigital number, since it uses as much as digits as its factorization.

89409811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 89409811 is about 9455.6761260102. The cubic root of 89409811 is about 447.1587419388.

The spelling of 89409811 in words is "eighty-nine million, four hundred nine thousand, eight hundred eleven".