89919469 has 2 divisors, whose sum is σ = 89919470. Its totient is φ = 89919468.

The previous prime is 89919451. The next prime is 89919491. The reversal of 89919469 is 96491998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 40386025 = 7038^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 89919469 - 2⁹ = 89918957 is a prime.

It is a super-2 number, since 2×89919469² = 16171021810483922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89919769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44959734 + 44959735.

It is an arithmetic number, because the mean of its divisors is an integer number (44959735).

Almost surely, 2^89919469 is an apocalyptic number.

It is an amenable number.

89919469 is a deficient number, since it is larger than the sum of its proper divisors (1).

89919469 is an equidigital number, since it uses as much as digits as its factorization.

89919469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 55.

The square root of 89919469 is about 9482.5876742585. The cubic root of 89919469 is about 448.0067710632.

The spelling of 89919469 in words is "eighty-nine million, nine hundred nineteen thousand, four hundred sixty-nine".