3985261 has 4 divisors (see below), whose sum is σ = 4554592. Its totient is φ = 3415932.

The previous prime is 3985249. The next prime is 3985277. The reversal of 3985261 is 1625893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3985261 - 2¹³ = 3977069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284655 + ... + 284668.

It is an arithmetic number, because the mean of its divisors is an integer number (1138648).

Almost surely, 2^3985261 is an apocalyptic number.

It is an amenable number.

3985261 is a deficient number, since it is larger than the sum of its proper divisors (569331).

3985261 is an equidigital number, since it uses as much as digits as its factorization.

3985261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569330.

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

The square root of 3985261 is about 1996.3118493863. The cubic root of 3985261 is about 158.5448926962.

The spelling of 3985261 in words is "three million, nine hundred eighty-five thousand, two hundred sixty-one".