9140220479 has 4 divisors (see below), whose sum is σ = 9843314376. Its totient is φ = 8437126584.

The previous prime is 9140220473. The next prime is 9140220499. The reversal of 9140220479 is 9740220419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9140220479 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 (9140220473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351546929 + ... + 351546954.

It is an arithmetic number, because the mean of its divisors is an integer number (2460828594).

Almost surely, 2^9140220479 is an apocalyptic number.

9140220479 is a deficient number, since it is larger than the sum of its proper divisors (703093897).

9140220479 is a wasteful number, since it uses less digits than its factorization.

9140220479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703093896.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 9140220479 is about 95604.5003072554. The cubic root of 9140220479 is about 2090.8308074918.

The spelling of 9140220479 in words is "nine billion, one hundred forty million, two hundred twenty thousand, four hundred seventy-nine".