3878437 has 4 divisors (see below), whose sum is σ = 3889900. Its totient is φ = 3866976.

The previous prime is 3878423. The next prime is 3878447. The reversal of 3878437 is 7348783.

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 1052676 + 2825761 = 1026^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878437 - 2¹⁹ = 3354149 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3878437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878447) 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, 5208 + ... + 5905.

It is an arithmetic number, because the mean of its divisors is an integer number (972475).

Almost surely, 2^3878437 is an apocalyptic number.

It is an amenable number.

3878437 is a deficient number, since it is larger than the sum of its proper divisors (11463).

3878437 is a wasteful number, since it uses less digits than its factorization.

3878437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11462.

The product of its digits is 112896, while the sum is 40.

The square root of 3878437 is about 1969.3747738813. The cubic root of 3878437 is about 157.1154572849.

The spelling of 3878437 in words is "three million, eight hundred seventy-eight thousand, four hundred thirty-seven".