3985501 has 4 divisors (see below), whose sum is σ = 4292092. Its totient is φ = 3678912.

The previous prime is 3985469. The next prime is 3985511. The reversal of 3985501 is 1055893.

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 488601 + 3496900 = 699^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 3985501 - 2⁵ = 3985469 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 (3985511) 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, 153276 + ... + 153301.

It is an arithmetic number, because the mean of its divisors is an integer number (1073023).

Almost surely, 2^3985501 is an apocalyptic number.

It is an amenable number.

3985501 is a deficient number, since it is larger than the sum of its proper divisors (306591).

3985501 is a wasteful number, since it uses less digits than its factorization.

3985501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306590.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 3985501 is about 1996.3719593302. The cubic root of 3985501 is about 158.5480752573.

The spelling of 3985501 in words is "three million, nine hundred eighty-five thousand, five hundred one".