2850391 has 4 divisors (see below), whose sum is σ = 2856384. Its totient is φ = 2844400.

The previous prime is 2850389. The next prime is 2850401. The reversal of 2850391 is 1930582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1930582 = 2 ⋅965291.

It is a cyclic number.

It is not a de Polignac number, because 2850391 - 2¹ = 2850389 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 (2850301) 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, 2215 + ... + 3256.

It is an arithmetic number, because the mean of its divisors is an integer number (714096).

2^2850391 is an apocalyptic number.

2850391 is a deficient number, since it is larger than the sum of its proper divisors (5993).

2850391 is an equidigital number, since it uses as much as digits as its factorization.

2850391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2850391 is about 1688.3101018474. The cubic root of 2850391 is about 141.7864773454.

The spelling of 2850391 in words is "two million, eight hundred fifty thousand, three hundred ninety-one".