9139454649 has 48 divisors (see below), whose sum is σ = 14486996160. Its totient is φ = 5517832320.

The previous prime is 9139454633. The next prime is 9139454663. The reversal of 9139454649 is 9464549319.

It is a happy number.

9139454649 is a `hidden beast` number, since 9 + 1 + 3 + 94 + 546 + 4 + 9 = 666.

It is not a de Polignac number, because 9139454649 - 2⁴ = 9139454633 is a prime.

It is a super-2 number, since 2×9139454649² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9139454595 and 9139454604.

It is not an unprimeable number, because it can be changed into a prime (9139454629) 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 47 ways as a sum of consecutive naturals, for example, 4561882 + ... + 4563884.

It is an arithmetic number, because the mean of its divisors is an integer number (301812420).

Almost surely, 2^9139454649 is an apocalyptic number.

It is an amenable number.

9139454649 is a deficient number, since it is larger than the sum of its proper divisors (5347541511).

9139454649 is a wasteful number, since it uses less digits than its factorization.

9139454649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2739 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 9139454649 is about 95600.4950248690. The cubic root of 9139454649 is about 2090.7724111733.

The spelling of 9139454649 in words is "nine billion, one hundred thirty-nine million, four hundred fifty-four thousand, six hundred forty-nine".