9012079991 has 8 divisors (see below), whose sum is σ = 9435167280. Its totient is φ = 8596481152.

The previous prime is 9012079927. The next prime is 9012080009. The reversal of 9012079991 is 1999702109.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9012079991 - 2⁶ = 9012079927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9012079291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869650 + ... + 1874463.

It is an arithmetic number, because the mean of its divisors is an integer number (1179395910).

Almost surely, 2^9012079991 is an apocalyptic number.

9012079991 is a deficient number, since it is larger than the sum of its proper divisors (423087289).

9012079991 is a wasteful number, since it uses less digits than its factorization.

9012079991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744225.

The product of its (nonzero) digits is 91854, while the sum is 47.

The square root of 9012079991 is about 94931.9755983199. The cubic root of 9012079991 is about 2081.0140512024.

The spelling of 9012079991 in words is "nine billion, twelve million, seventy-nine thousand, nine hundred ninety-one".