3921398 has 16 divisors (see below), whose sum is σ = 6471360. Its totient is φ = 1770816.

The previous prime is 3921383. The next prime is 3921413. The reversal of 3921398 is 8931293.

It is an interprime number because it is at equal distance from previous prime (3921383) and next prime (3921413).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (404460).

Almost surely, 2^3921398 is an apocalyptic number.

3921398 is a deficient number, since it is larger than the sum of its proper divisors (2549962).

3921398 is a wasteful number, since it uses less digits than its factorization.

3921398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271.

The product of its digits is 11664, while the sum is 35.

The square root of 3921398 is about 1980.2520041651. The cubic root of 3921398 is about 157.6934450169.

The spelling of 3921398 in words is "three million, nine hundred twenty-one thousand, three hundred ninety-eight".