3904398 has 12 divisors (see below), whose sum is σ = 8459568. Its totient is φ = 1301460.

The previous prime is 3904387. The next prime is 3904409. The reversal of 3904398 is 8934093.

It is an interprime number because it is at equal distance from previous prime (3904387) and next prime (3904409).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 108438 + ... + 108473.

It is an arithmetic number, because the mean of its divisors is an integer number (704964).

Almost surely, 2^3904398 is an apocalyptic number.

3904398 is an abundant number, since it is smaller than the sum of its proper divisors (4555170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3904398 is a wasteful number, since it uses less digits than its factorization.

3904398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216919 (or 216916 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3904398 is about 1975.9549590008. The cubic root of 3904398 is about 157.4652379820.

It can be divided in two parts, 3 and 904398, that added together give a square (904401 = 951²).

The spelling of 3904398 in words is "three million, nine hundred four thousand, three hundred ninety-eight".