3896405 has 8 divisors (see below), whose sum is σ = 4720032. Its totient is φ = 3087568.

The previous prime is 3896381. The next prime is 3896413. The reversal of 3896405 is 5046983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3896405 - 2⁶ = 3896341 is a prime.

It is a super-3 number, since 3×3896405³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3107 + ... + 4176.

It is an arithmetic number, because the mean of its divisors is an integer number (590004).

Almost surely, 2^3896405 is an apocalyptic number.

It is an amenable number.

3896405 is a deficient number, since it is larger than the sum of its proper divisors (823627).

3896405 is a wasteful number, since it uses less digits than its factorization.

3896405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7395.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3896405 is about 1973.9313564559. The cubic root of 3896405 is about 157.3577114185.

The spelling of 3896405 in words is "three million, eight hundred ninety-six thousand, four hundred five".