2869021 has 4 divisors (see below), whose sum is σ = 2930112. Its totient is φ = 2807932.

The previous prime is 2869001. The next prime is 2869033. The reversal of 2869021 is 1209682.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2869021 - 2¹³ = 2860829 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 (2869001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 30475 + ... + 30568.

It is an arithmetic number, because the mean of its divisors is an integer number (732528).

2^2869021 is an apocalyptic number.

It is an amenable number.

2869021 is a deficient number, since it is larger than the sum of its proper divisors (61091).

2869021 is an equidigital number, since it uses as much as digits as its factorization.

2869021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61090.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2869021 is about 1693.8184672508. The cubic root of 2869021 is about 142.0947096800.

It can be divided in two parts, 286902 and 1, that added together give a triangular number (286903 = T₇₅₇).

The spelling of 2869021 in words is "two million, eight hundred sixty-nine thousand, twenty-one".