3899278 has 4 divisors (see below), whose sum is σ = 5848920. Its totient is φ = 1949638.

The previous prime is 3899243. The next prime is 3899279. The reversal of 3899278 is 8729983.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974818 + ... + 974821.

It is an arithmetic number, because the mean of its divisors is an integer number (1462230).

Almost surely, 2^3899278 is an apocalyptic number.

3899278 is a deficient number, since it is larger than the sum of its proper divisors (1949642).

3899278 is a wasteful number, since it uses less digits than its factorization.

3899278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949641.

The product of its digits is 217728, while the sum is 46.

The square root of 3899278 is about 1974.6589578963. The cubic root of 3899278 is about 157.3963776279.

The spelling of 3899278 in words is "three million, eight hundred ninety-nine thousand, two hundred seventy-eight".