9131449797 has 12 divisors (see below), whose sum is σ = 13207214124. Its totient is φ = 6079629120.

The previous prime is 9131449783. The next prime is 9131449813. The reversal of 9131449797 is 7979441319.

It can be written as a sum of positive squares in 2 ways, for example, as 4309397316 + 4822052481 = 65646^2 + 69441^2 .

It is not a de Polignac number, because 9131449797 - 2¹¹ = 9131447749 is a prime.

It is a super-3 number, since 3×9131449797³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131449757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659778 + ... + 673475.

It is an arithmetic number, because the mean of its divisors is an integer number (1100601177).

Almost surely, 2^9131449797 is an apocalyptic number.

It is an amenable number.

9131449797 is a deficient number, since it is larger than the sum of its proper divisors (4075764327).

9131449797 is a wasteful number, since it uses less digits than its factorization.

9131449797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334020 (or 1334017 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 9131449797 is about 95558.6196896962. The cubic root of 9131449797 is about 2090.1618272473.

The spelling of 9131449797 in words is "nine billion, one hundred thirty-one million, four hundred forty-nine thousand, seven hundred ninety-seven".