3970423085 has 4 divisors (see below), whose sum is σ = 4764507708. Its totient is φ = 3176338464.

The previous prime is 3970423073. The next prime is 3970423087. The reversal of 3970423085 is 5803240793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5803240793 = 7 ⋅829034399.

It can be written as a sum of positive squares in 2 ways, for example, as 2245432996 + 1724990089 = 47386^2 + 41533^2 .

It is a cyclic number.

It is not a de Polignac number, because 3970423085 - 2¹² = 3970418989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3970423087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397042304 + ... + 397042313.

It is an arithmetic number, because the mean of its divisors is an integer number (1191126927).

Almost surely, 2^3970423085 is an apocalyptic number.

It is an amenable number.

3970423085 is a deficient number, since it is larger than the sum of its proper divisors (794084623).

3970423085 is an equidigital number, since it uses as much as digits as its factorization.

3970423085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794084622.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 3970423085 is about 63011.2933131832. The cubic root of 3970423085 is about 1583.4788332648.

The spelling of 3970423085 in words is "three billion, nine hundred seventy million, four hundred twenty-three thousand, eighty-five".