4021698 has 16 divisors (see below), whose sum is σ = 8081280. Its totient is φ = 1334256.

The previous prime is 4021663. The next prime is 4021727. The reversal of 4021698 is 8961204.

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 7 ways as a sum of consecutive naturals, for example, 90 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (505080).

Almost surely, 2^4021698 is an apocalyptic number.

4021698 is an abundant number, since it is smaller than the sum of its proper divisors (4059582).

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

4021698 is a wasteful number, since it uses less digits than its factorization.

4021698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 4021698 is about 2005.4171635847. The cubic root of 4021698 is about 159.0266163266.

The spelling of 4021698 in words is "four million, twenty-one thousand, six hundred ninety-eight".