906448913 has 4 divisors (see below), whose sum is σ = 907267380. Its totient is φ = 905630448.

The previous prime is 906448849. The next prime is 906448927. The reversal of 906448913 is 319844609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173501584 + 732947329 = 13172^2 + 27073^2 .

It is a cyclic number.

It is not a de Polignac number, because 906448913 - 2⁶ = 906448849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906448943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407570 + ... + 409787.

It is an arithmetic number, because the mean of its divisors is an integer number (226816845).

Almost surely, 2^906448913 is an apocalyptic number.

It is an amenable number.

906448913 is a deficient number, since it is larger than the sum of its proper divisors (818467).

906448913 is a wasteful number, since it uses less digits than its factorization.

906448913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818466.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 906448913 is about 30107.2900308214. The cubic root of 906448913 is about 967.7899566037.

The spelling of 906448913 in words is "nine hundred six million, four hundred forty-eight thousand, nine hundred thirteen".