3974924209 has 9 divisors (see below), whose sum is σ = 4039429611. Its totient is φ = 3911435880.

The previous prime is 3974924201. The next prime is 3974924227. The reversal of 3974924209 is 9024294793.

The square root of 3974924209 is 63047.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2464824609 + 1510099600 = 49647^2 + 38860^2 .

It is not a de Polignac number, because 3974924209 - 2³ = 3974924201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3974924201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4223679 + ... + 4224619.

Almost surely, 2^3974924209 is an apocalyptic number.

3974924209 is the 63047-th square number.

3974924209 is the 31524-th centered octagonal number.

It is an amenable number.

3974924209 is a deficient number, since it is larger than the sum of its proper divisors (64505402).

3974924209 is an frugal number, since it uses more digits than its factorization.

3974924209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The cubic root of 3974924209 is about 1584.0769847087.

Multiplying 3974924209 by its sum of digits (49), we get a square (194771286241 = 441329²).

The spelling of 3974924209 in words is "three billion, nine hundred seventy-four million, nine hundred twenty-four thousand, two hundred nine".