9428420591 has 8 divisors (see below), whose sum is σ = 9501760224. Its totient is φ = 9355338720.

The previous prime is 9428420587. The next prime is 9428420621. The reversal of 9428420591 is 1950248249.

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 9428420591 - 2² = 9428420587 is a prime.

It is a super-2 number, since 2×9428420591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9428420191) 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, 9326 + ... + 137636.

It is an arithmetic number, because the mean of its divisors is an integer number (1187720028).

Almost surely, 2^9428420591 is an apocalyptic number.

9428420591 is a deficient number, since it is larger than the sum of its proper divisors (73339633).

9428420591 is a wasteful number, since it uses less digits than its factorization.

9428420591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128881.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 9428420591 is about 97100.0545365449. The cubic root of 9428420591 is about 2112.5791175438.

The spelling of 9428420591 in words is "nine billion, four hundred twenty-eight million, four hundred twenty thousand, five hundred ninety-one".