3962581 has 24 divisors (see below), whose sum is σ = 5023296. Its totient is φ = 3104640.

The previous prime is 3962557. The next prime is 3962587. The reversal of 3962581 is 1852693.

It is not a de Polignac number, because 3962581 - 2⁵ = 3962549 is a prime.

It is a super-2 number, since 2×3962581² = 31404096363122, which contains 22 as substring.

Its product of digits (12960) is a multiple of the sum of its prime divisors (162).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3962587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55776 + ... + 55846.

It is an arithmetic number, because the mean of its divisors is an integer number (209304).

Almost surely, 2^3962581 is an apocalyptic number.

It is an amenable number.

3962581 is a deficient number, since it is larger than the sum of its proper divisors (1060715).

3962581 is a wasteful number, since it uses less digits than its factorization.

3962581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 162 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 3962581 is about 1990.6232692300. The cubic root of 3962581 is about 158.2435622850.

The spelling of 3962581 in words is "three million, nine hundred sixty-two thousand, five hundred eighty-one".