3890398 has 4 divisors (see below), whose sum is σ = 5835600. Its totient is φ = 1945198.

The previous prime is 3890387. The next prime is 3890417. The reversal of 3890398 is 8930983.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3890398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972598 + ... + 972601.

It is an arithmetic number, because the mean of its divisors is an integer number (1458900).

Almost surely, 2^3890398 is an apocalyptic number.

3890398 is a deficient number, since it is larger than the sum of its proper divisors (1945202).

3890398 is a wasteful number, since it uses less digits than its factorization.

3890398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945201.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 3890398 is about 1972.4091867561. The cubic root of 3890398 is about 157.2768048782.

The spelling of 3890398 in words is "three million, eight hundred ninety thousand, three hundred ninety-eight".