9091047640 has 32 divisors (see below), whose sum is σ = 20461228560. Its totient is φ = 3635286400.

The previous prime is 9091047611. The next prime is 9091047671. The reversal of 9091047640 is 467401909.

It is a happy number.

9091047640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 9091047593 and 9091047602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101130 + ... + 168550.

Almost surely, 2^9091047640 is an apocalyptic number.

It is an amenable number.

9091047640 is an abundant number, since it is smaller than the sum of its proper divisors (11370180920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9091047640 is a wasteful number, since it uses less digits than its factorization.

9091047640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70803 (or 70799 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 9091047640 is about 95346.9854793533. The cubic root of 9091047640 is about 2087.0746249329.

The spelling of 9091047640 in words is "nine billion, ninety-one million, forty-seven thousand, six hundred forty".