89743949 has 2 divisors, whose sum is σ = 89743950. Its totient is φ = 89743948.

The previous prime is 89743943. The next prime is 89743961. The reversal of 89743949 is 94934798.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 18003049 = 8470^2 + 4243^2 .

It is a cyclic number.

It is not a de Polignac number, because 89743949 - 2⁴ = 89743933 is a prime.

It is a super-2 number, since 2×89743949² = 16107952764229202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89743949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89743943) 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, 44871974 + 44871975.

It is an arithmetic number, because the mean of its divisors is an integer number (44871975).

Almost surely, 2^89743949 is an apocalyptic number.

It is an amenable number.

89743949 is a deficient number, since it is larger than the sum of its proper divisors (1).

89743949 is an equidigital number, since it uses as much as digits as its factorization.

89743949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 89743949 is about 9473.3282957997. The cubic root of 89743949 is about 447.7150827755.

The spelling of 89743949 in words is "eighty-nine million, seven hundred forty-three thousand, nine hundred forty-nine".