2801939 has 4 divisors (see below), whose sum is σ = 3202224. Its totient is φ = 2401656.

The previous prime is 2801927. The next prime is 2801941. The reversal of 2801939 is 9391082.

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 2801939 - 2¹⁶ = 2736403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2801339) 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, 200132 + ... + 200145.

It is an arithmetic number, because the mean of its divisors is an integer number (800556).

2^2801939 is an apocalyptic number.

2801939 is a deficient number, since it is larger than the sum of its proper divisors (400285).

2801939 is an equidigital number, since it uses as much as digits as its factorization.

2801939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400284.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2801939 is about 1673.8993398649. The cubic root of 2801939 is about 140.9785021632.

The spelling of 2801939 in words is "two million, eight hundred one thousand, nine hundred thirty-nine".