89628949 has 2 divisors, whose sum is σ = 89628950. Its totient is φ = 89628948.

The previous prime is 89628901. The next prime is 89628977. The reversal of 89628949 is 94982698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88172100 + 1456849 = 9390^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 89628949 - 2²¹ = 87531797 is a prime.

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 89628949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89628349) 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, 44814474 + 44814475.

It is an arithmetic number, because the mean of its divisors is an integer number (44814475).

Almost surely, 2^89628949 is an apocalyptic number.

It is an amenable number.

89628949 is a deficient number, since it is larger than the sum of its proper divisors (1).

89628949 is an equidigital number, since it uses as much as digits as its factorization.

89628949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 55.

The square root of 89628949 is about 9467.2566776231. The cubic root of 89628949 is about 447.5237634978.

The spelling of 89628949 in words is "eighty-nine million, six hundred twenty-eight thousand, nine hundred forty-nine".