2021279 has 8 divisors (see below), whose sum is σ = 2202480. Its totient is φ = 1843776.

The previous prime is 2021251. The next prime is 2021291. The reversal of 2021279 is 9721202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021219) 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, 284 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (275310).

2^2021279 is an apocalyptic number.

2021279 is a deficient number, since it is larger than the sum of its proper divisors (181201).

2021279 is a wasteful number, since it uses less digits than its factorization.

2021279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2021279 is about 1421.7169197840. The cubic root of 2021279 is about 126.4373606046.

The spelling of 2021279 in words is "two million, twenty-one thousand, two hundred seventy-nine".