3878369 has 4 divisors (see below), whose sum is σ = 4230960. Its totient is φ = 3525780.

The previous prime is 3878359. The next prime is 3878389. The reversal of 3878369 is 9638783.

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 3878369 - 2⁸ = 3878113 is a prime.

It is a super-2 number, since 2×3878369² = 30083492200322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3878359) 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 3 ways as a sum of consecutive naturals, for example, 176279 + ... + 176300.

It is an arithmetic number, because the mean of its divisors is an integer number (1057740).

Almost surely, 2^3878369 is an apocalyptic number.

It is an amenable number.

3878369 is a deficient number, since it is larger than the sum of its proper divisors (352591).

3878369 is a wasteful number, since it uses less digits than its factorization.

3878369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352590.

The product of its digits is 217728, while the sum is 44.

The square root of 3878369 is about 1969.3575094431. The cubic root of 3878369 is about 157.1145390531.

The spelling of 3878369 in words is "three million, eight hundred seventy-eight thousand, three hundred sixty-nine".