3925997 has 4 divisors (see below), whose sum is σ = 4156956. Its totient is φ = 3695040.

The previous prime is 3925993. The next prime is 3926017. The reversal of 3925997 is 7995293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1190281 + 2735716 = 1091^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 3925997 - 2² = 3925993 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 (3925993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115454 + ... + 115487.

It is an arithmetic number, because the mean of its divisors is an integer number (1039239).

Almost surely, 2^3925997 is an apocalyptic number.

It is an amenable number.

3925997 is a deficient number, since it is larger than the sum of its proper divisors (230959).

3925997 is a wasteful number, since it uses less digits than its factorization.

3925997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230958.

The product of its digits is 153090, while the sum is 44.

The square root of 3925997 is about 1981.4128797401. The cubic root of 3925997 is about 157.7550683480.

The spelling of 3925997 in words is "three million, nine hundred twenty-five thousand, nine hundred ninety-seven".