3898978 has 8 divisors (see below), whose sum is σ = 5881680. Its totient is φ = 1938420.

The previous prime is 3898957. The next prime is 3898981. The reversal of 3898978 is 8798983.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5088 + ... + 5803.

It is an arithmetic number, because the mean of its divisors is an integer number (735210).

Almost surely, 2^3898978 is an apocalyptic number.

3898978 is a deficient number, since it is larger than the sum of its proper divisors (1982702).

3898978 is a wasteful number, since it uses less digits than its factorization.

3898978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072.

The product of its digits is 870912, while the sum is 52.

The square root of 3898978 is about 1974.5829939509. The cubic root of 3898978 is about 157.3923409726.

The spelling of 3898978 in words is "three million, eight hundred ninety-eight thousand, nine hundred seventy-eight".