3932581 has 2 divisors, whose sum is σ = 3932582. Its totient is φ = 3932580.

The previous prime is 3932573. The next prime is 3932633. The reversal of 3932581 is 1852393.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 188356 = 1935^2 + 434^2 .

It is an emirp because it is prime and its reverse (1852393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3932581 - 2³ = 3932573 is a prime.

It is a super-2 number, since 2×3932581² = 30930386643122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3932521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1966290 + 1966291.

It is an arithmetic number, because the mean of its divisors is an integer number (1966291).

Almost surely, 2^3932581 is an apocalyptic number.

It is an amenable number.

3932581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3932581 is an equidigital number, since it uses as much as digits as its factorization.

3932581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 3932581 is about 1983.0736244527. The cubic root of 3932581 is about 157.8432055601.

The spelling of 3932581 in words is "three million, nine hundred thirty-two thousand, five hundred eighty-one".