3898420 has 24 divisors (see below), whose sum is σ = 8618400. Its totient is φ = 1477152.

The previous prime is 3898417. The next prime is 3898421. The reversal of 3898420 is 248983.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4750 + ... + 5509.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^3898420 is an apocalyptic number.

It is an amenable number.

3898420 is an abundant number, since it is smaller than the sum of its proper divisors (4719980).

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

3898420 is a wasteful number, since it uses less digits than its factorization.

3898420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287 (or 10285 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 3898420 is about 1974.4416932389. The cubic root of 3898420 is about 157.3848322428.

The spelling of 3898420 in words is "three million, eight hundred ninety-eight thousand, four hundred twenty".