9921392627 has 8 divisors (see below), whose sum is σ = 10505966976. Its totient is φ = 9336925312.

The previous prime is 9921392597. The next prime is 9921392653. The reversal of 9921392627 is 7262931299.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9921392627 is a prime.

It is a super-2 number, since 2×9921392627² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9921092627) 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, 240353 + ... + 278589.

It is an arithmetic number, because the mean of its divisors is an integer number (1313245872).

Almost surely, 2^9921392627 is an apocalyptic number.

9921392627 is a deficient number, since it is larger than the sum of its proper divisors (584574349).

9921392627 is a wasteful number, since it uses less digits than its factorization.

9921392627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53517.

The product of its digits is 734832, while the sum is 50.

The square root of 9921392627 is about 99606.1876943396. The cubic root of 9921392627 is about 2148.7746850428.

The spelling of 9921392627 in words is "nine billion, nine hundred twenty-one million, three hundred ninety-two thousand, six hundred twenty-seven".