2143898 has 16 divisors (see below), whose sum is σ = 3356160. Its totient is φ = 1026000.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143898 is 8983412.

It is a happy number.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

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, 9248 + ... + 9476.

It is an arithmetic number, because the mean of its divisors is an integer number (209760).

2^2143898 is an apocalyptic number.

2143898 is a deficient number, since it is larger than the sum of its proper divisors (1212262).

2143898 is a wasteful number, since it uses less digits than its factorization.

2143898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413.

The product of its digits is 13824, while the sum is 35.

The square root of 2143898 is about 1464.2055866578. The cubic root of 2143898 is about 128.9440696585.

The spelling of 2143898 in words is "two million, one hundred forty-three thousand, eight hundred ninety-eight".