2140869 has 8 divisors (see below), whose sum is σ = 2881120. Its totient is φ = 1413936.

The previous prime is 2140849. The next prime is 2140877. The reversal of 2140869 is 9680412.

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

It is not a de Polignac number, because 2140869 - 2⁷ = 2140741 is a prime.

It is a super-2 number, since 2×2140869² = 9166640150322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140849) 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, 2947 + ... + 3600.

It is an arithmetic number, because the mean of its divisors is an integer number (360140).

2^2140869 is an apocalyptic number.

It is an amenable number.

2140869 is a deficient number, since it is larger than the sum of its proper divisors (740251).

2140869 is a wasteful number, since it uses less digits than its factorization.

2140869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659.

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

The square root of 2140869 is about 1463.1708717713. The cubic root of 2140869 is about 128.8833149536.

The spelling of 2140869 in words is "two million, one hundred forty thousand, eight hundred sixty-nine".