2349921 has 16 divisors (see below), whose sum is σ = 3602304. Its totient is φ = 1334784.

The previous prime is 2349917. The next prime is 2349937. The reversal of 2349921 is 1299432.

It is not a de Polignac number, because 2349921 - 2² = 2349917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2344921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6481 + ... + 6833.

It is an arithmetic number, because the mean of its divisors is an integer number (225144).

2^2349921 is an apocalyptic number.

2349921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2349921 is a deficient number, since it is larger than the sum of its proper divisors (1252383).

2349921 is a wasteful number, since it uses less digits than its factorization.

2349921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its digits is 3888, while the sum is 30.

The square root of 2349921 is about 1532.9452045001. The cubic root of 2349921 is about 132.9487997092.

The spelling of 2349921 in words is "two million, three hundred forty-nine thousand, nine hundred twenty-one".