8470938021 has 16 divisors (see below), whose sum is σ = 13901026944. Its totient is φ = 4468186944.

The previous prime is 8470938013. The next prime is 8470938023. The reversal of 8470938021 is 1208390748.

It is not a de Polignac number, because 8470938021 - 2³ = 8470938013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8470938023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15514266 + ... + 15514811.

It is an arithmetic number, because the mean of its divisors is an integer number (868814184).

Almost surely, 2^8470938021 is an apocalyptic number.

It is an amenable number.

8470938021 is a deficient number, since it is larger than the sum of its proper divisors (5430088923).

8470938021 is a wasteful number, since it uses less digits than its factorization.

8470938021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31029100.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8470938021 is about 92037.6989119133. The cubic root of 8470938021 is about 2038.4989936482.

The spelling of 8470938021 in words is "eight billion, four hundred seventy million, nine hundred thirty-eight thousand, twenty-one".