9449090391 has 64 divisors (see below), whose sum is σ = 14430366720. Its totient is φ = 5456056320.

The previous prime is 9449090389. The next prime is 9449090459. The reversal of 9449090391 is 1930909449.

It is not a de Polignac number, because 9449090391 - 2¹ = 9449090389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9449090391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9449090351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11397765 + ... + 11398593.

It is an arithmetic number, because the mean of its divisors is an integer number (225474480).

Almost surely, 2^9449090391 is an apocalyptic number.

9449090391 is a deficient number, since it is larger than the sum of its proper divisors (4981276329).

9449090391 is a wasteful number, since it uses less digits than its factorization.

9449090391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 9449090391 is about 97206.4318396679. The cubic root of 9449090391 is about 2114.1217837249.

The spelling of 9449090391 in words is "nine billion, four hundred forty-nine million, ninety thousand, three hundred ninety-one".