89612819 has 2 divisors, whose sum is σ = 89612820. Its totient is φ = 89612818.

The previous prime is 89612791. The next prime is 89612827. The reversal of 89612819 is 91821698.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89612819 - 2¹² = 89608723 is a prime.

It is a super-2 number, since 2×89612819² = 16060914658253522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89612819.

It is not a weakly prime, because it can be changed into another prime (89612849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44806409 + 44806410.

It is an arithmetic number, because the mean of its divisors is an integer number (44806410).

Almost surely, 2^89612819 is an apocalyptic number.

89612819 is a deficient number, since it is larger than the sum of its proper divisors (1).

89612819 is an equidigital number, since it uses as much as digits as its factorization.

89612819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 44.

The square root of 89612819 is about 9466.4047557666. The cubic root of 89612819 is about 447.4969158053.

The spelling of 89612819 in words is "eighty-nine million, six hundred twelve thousand, eight hundred nineteen".