3878977 has 4 divisors (see below), whose sum is σ = 3883140. Its totient is φ = 3874816.

The previous prime is 3878947. The next prime is 3878981. The reversal of 3878977 is 7798783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1640961 + 2238016 = 1281^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878977 - 2¹⁵ = 3846209 is a prime.

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 3878977.

It is not an unprimeable number, because it can be changed into a prime (3878947) 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, 33 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (970785).

Almost surely, 2^3878977 is an apocalyptic number.

It is an amenable number.

3878977 is a deficient number, since it is larger than the sum of its proper divisors (4163).

3878977 is a wasteful number, since it uses less digits than its factorization.

3878977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162.

The product of its digits is 592704, while the sum is 49.

The square root of 3878977 is about 1969.5118684588. The cubic root of 3878977 is about 157.1227487454.

The spelling of 3878977 in words is "three million, eight hundred seventy-eight thousand, nine hundred seventy-seven".