2853991 has 4 divisors (see below), whose sum is σ = 3261712. Its totient is φ = 2446272.

The previous prime is 2853989. The next prime is 2854003. The reversal of 2853991 is 1993582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2853991 - 2¹ = 2853989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2853991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2853911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203850 + ... + 203863.

It is an arithmetic number, because the mean of its divisors is an integer number (815428).

2^2853991 is an apocalyptic number.

2853991 is a deficient number, since it is larger than the sum of its proper divisors (407721).

2853991 is an equidigital number, since it uses as much as digits as its factorization.

2853991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407720.

The product of its digits is 19440, while the sum is 37.

The square root of 2853991 is about 1689.3759202735. The cubic root of 2853991 is about 141.8461436134.

It can be divided in two parts, 2853 and 991, that added together give a square (3844 = 62²).

The spelling of 2853991 in words is "two million, eight hundred fifty-three thousand, nine hundred ninety-one".