3896005 has 16 divisors (see below), whose sum is σ = 4903920. Its totient is φ = 2967552.

The previous prime is 3896003. The next prime is 3896017. The reversal of 3896005 is 5006983.

It can be written as a sum of positive squares in 8 ways, for example, as 263169 + 3632836 = 513^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 3896005 - 2¹ = 3896003 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3896003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13927 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (306495).

Almost surely, 2^3896005 is an apocalyptic number.

It is an amenable number.

3896005 is a deficient number, since it is larger than the sum of its proper divisors (1007915).

3896005 is a wasteful number, since it uses less digits than its factorization.

3896005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

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

The square root of 3896005 is about 1973.8300332095. The cubic root of 3896005 is about 157.3523265198.

The spelling of 3896005 in words is "three million, eight hundred ninety-six thousand, five".