3970421724 has 12 divisors (see below), whose sum is σ = 9264317384. Its totient is φ = 1323473904.

The previous prime is 3970421711. The next prime is 3970421729. The reversal of 3970421724 is 4271240793.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×3970421724² = 31528497332822264352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3970421729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165434227 + ... + 165434250.

Almost surely, 2^3970421724 is an apocalyptic number.

It is an amenable number.

3970421724 is an abundant number, since it is smaller than the sum of its proper divisors (5293895660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3970421724 is a wasteful number, since it uses less digits than its factorization.

3970421724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330868484 (or 330868482 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 3970421724 is about 63011.2825135309. The cubic root of 3970421724 is about 1583.4786523341.

The spelling of 3970421724 in words is "three billion, nine hundred seventy million, four hundred twenty-one thousand, seven hundred twenty-four".