2893921 has 4 divisors (see below), whose sum is σ = 2916144. Its totient is φ = 2871700.

The previous prime is 2893897. The next prime is 2893937. The reversal of 2893921 is 1293982.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1293982 = 2 ⋅646991.

It is a cyclic number.

It is not a de Polignac number, because 2893921 - 2⁹ = 2893409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2893951) 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, 10915 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (729036).

2^2893921 is an apocalyptic number.

It is an amenable number.

2893921 is a deficient number, since it is larger than the sum of its proper divisors (22223).

2893921 is a wasteful number, since it uses less digits than its factorization.

2893921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222.

The product of its digits is 7776, while the sum is 34.

The square root of 2893921 is about 1701.1528443970. The cubic root of 2893921 is about 142.5046022931.

The spelling of 2893921 in words is "two million, eight hundred ninety-three thousand, nine hundred twenty-one".