9487375821 has 96 divisors (see below), whose sum is σ = 17589411840. Its totient is φ = 4784572800.

The previous prime is 9487375817. The next prime is 9487375841. The reversal of 9487375821 is 1285737849.

It is a happy number.

It is not a de Polignac number, because 9487375821 - 2² = 9487375817 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9487375801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5392740 + ... + 5394498.

It is an arithmetic number, because the mean of its divisors is an integer number (183223040).

Almost surely, 2^9487375821 is an apocalyptic number.

It is an amenable number.

9487375821 is a deficient number, since it is larger than the sum of its proper divisors (8102036019).

9487375821 is a wasteful number, since it uses less digits than its factorization.

9487375821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007 (or 2004 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 9487375821 is about 97403.1612474667. The cubic root of 9487375821 is about 2116.9732395124.

The spelling of 9487375821 in words is "nine billion, four hundred eighty-seven million, three hundred seventy-five thousand, eight hundred twenty-one".