8421900931 has 8 divisors (see below), whose sum is σ = 8467281504. Its totient is φ = 8376622080.

The previous prime is 8421900919. The next prime is 8421900941. The reversal of 8421900931 is 1390091248.

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 8421900931 - 2¹¹ = 8421898883 is a prime.

It is a super-2 number, since 2×8421900931² (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 (8421900901) by changing a digit.

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, 143605 + ... + 193561.

It is an arithmetic number, because the mean of its divisors is an integer number (1058410188).

Almost surely, 2^8421900931 is an apocalyptic number.

8421900931 is a deficient number, since it is larger than the sum of its proper divisors (45380573).

8421900931 is a wasteful number, since it uses less digits than its factorization.

8421900931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50861.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 8421900931 is about 91770.9154961418. The cubic root of 8421900931 is about 2034.5578492335.

The spelling of 8421900931 in words is "eight billion, four hundred twenty-one million, nine hundred thousand, nine hundred thirty-one".