3879915 has 32 divisors (see below), whose sum is σ = 6785856. Its totient is φ = 1881600.

The previous prime is 3879913. The next prime is 3879917. The reversal of 3879915 is 5199783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3879913) and next prime (3879917).

It is not a de Polignac number, because 3879915 - 2¹ = 3879913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3879913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19597 + ... + 19793.

It is an arithmetic number, because the mean of its divisors is an integer number (212058).

Almost surely, 2^3879915 is an apocalyptic number.

3879915 is a deficient number, since it is larger than the sum of its proper divisors (2905941).

3879915 is a wasteful number, since it uses less digits than its factorization.

3879915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 68040, while the sum is 42.

The square root of 3879915 is about 1969.7499841350. The cubic root of 3879915 is about 157.1354126737.

The spelling of 3879915 in words is "three million, eight hundred seventy-nine thousand, nine hundred fifteen".