3898992 has 40 divisors (see below), whose sum is σ = 10423440. Its totient is φ = 1254400.

The previous prime is 3898991. The next prime is 3899011. The reversal of 3898992 is 2998983.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9 + ... + 2792.

It is an arithmetic number, because the mean of its divisors is an integer number (260586).

Almost surely, 2^3898992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3898992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5211720).

3898992 is an abundant number, since it is smaller than the sum of its proper divisors (6524448).

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

3898992 is a wasteful number, since it uses less digits than its factorization.

3898992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2835 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 3898992 is about 1974.5865390000. The cubic root of 3898992 is about 157.3925293544.

Subtracting from 3898992 its reverse (2998983), we obtain a palindrome (900009).

The spelling of 3898992 in words is "three million, eight hundred ninety-eight thousand, nine hundred ninety-two".