3930561 has 6 divisors (see below), whose sum is σ = 5677490. Its totient is φ = 2620368.

The previous prime is 3930559. The next prime is 3930569. The reversal of 3930561 is 1650393.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 690561 = 1800^2 + 831^2 .

It is not a de Polignac number, because 3930561 - 2¹ = 3930559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3930569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218356 + ... + 218373.

Almost surely, 2^3930561 is an apocalyptic number.

It is an amenable number.

3930561 is a deficient number, since it is larger than the sum of its proper divisors (1746929).

3930561 is a wasteful number, since it uses less digits than its factorization.

3930561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436735 (or 436732 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 3930561 is about 1982.5642486437. The cubic root of 3930561 is about 157.8161751456.

The spelling of 3930561 in words is "three million, nine hundred thirty thousand, five hundred sixty-one".