3897878 has 8 divisors (see below), whose sum is σ = 6035520. Its totient is φ = 1886040.

The previous prime is 3897877. The next prime is 3897889. The reversal of 3897878 is 8787983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×3897878⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897871) 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, 31373 + ... + 31496.

It is an arithmetic number, because the mean of its divisors is an integer number (754440).

Almost surely, 2^3897878 is an apocalyptic number.

3897878 is a deficient number, since it is larger than the sum of its proper divisors (2137642).

3897878 is a wasteful number, since it uses less digits than its factorization.

3897878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62902.

The product of its digits is 677376, while the sum is 50.

The square root of 3897878 is about 1974.3044344781. The cubic root of 3897878 is about 157.3775381311.

The spelling of 3897878 in words is "three million, eight hundred ninety-seven thousand, eight hundred seventy-eight".