3863405 has 24 divisors (see below), whose sum is σ = 5812632. Its totient is φ = 2443392.

The previous prime is 3863399. The next prime is 3863407. The reversal of 3863405 is 5043683.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 3759721 = 322^2 + 1939^2 .

It is not a de Polignac number, because 3863405 - 2¹² = 3859309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3863407) 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, 2579 + ... + 3791.

It is an arithmetic number, because the mean of its divisors is an integer number (242193).

Almost surely, 2^3863405 is an apocalyptic number.

3863405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3863405 is a deficient number, since it is larger than the sum of its proper divisors (1949227).

3863405 is a wasteful number, since it uses less digits than its factorization.

3863405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3863405 is about 1965.5546291060. The cubic root of 3863405 is about 156.9122124067.

The spelling of 3863405 in words is "three million, eight hundred sixty-three thousand, four hundred five".