56398949 has 2 divisors, whose sum is σ = 56398950. Its totient is φ = 56398948.

The previous prime is 56398913. The next prime is 56398963. The reversal of 56398949 is 94989365.

56398949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 792100 = 7457^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 56398949 - 2¹² = 56394853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56398949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56398999) 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, 28199474 + 28199475.

It is an arithmetic number, because the mean of its divisors is an integer number (28199475).

Almost surely, 2^56398949 is an apocalyptic number.

It is an amenable number.

56398949 is a deficient number, since it is larger than the sum of its proper divisors (1).

56398949 is an equidigital number, since it uses as much as digits as its factorization.

56398949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 53.

The square root of 56398949 is about 7509.9233684506. The cubic root of 56398949 is about 383.4926137488.

The spelling of 56398949 in words is "fifty-six million, three hundred ninety-eight thousand, nine hundred forty-nine".