3878477 has 4 divisors (see below), whose sum is σ = 3973116. Its totient is φ = 3783840.

The previous prime is 3878449. The next prime is 3878491. The reversal of 3878477 is 7748783.

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 1976836 + 1901641 = 1406^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878477 - 2⁸ = 3878221 is a prime.

It is a Duffinian number.

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 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, 47258 + ... + 47339.

It is an arithmetic number, because the mean of its divisors is an integer number (993279).

Almost surely, 2^3878477 is an apocalyptic number.

It is an amenable number.

3878477 is a deficient number, since it is larger than the sum of its proper divisors (94639).

3878477 is an equidigital number, since it uses as much as digits as its factorization.

3878477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94638.

The product of its digits is 263424, while the sum is 44.

The square root of 3878477 is about 1969.3849293625. The cubic root of 3878477 is about 157.1159974163.

The spelling of 3878477 in words is "three million, eight hundred seventy-eight thousand, four hundred seventy-seven".