2340439921 has 8 divisors (see below), whose sum is σ = 2404725120. Its totient is φ = 2276209008.

The previous prime is 2340439903. The next prime is 2340439939. The reversal of 2340439921 is 1299340432.

It is an interprime number because it is at equal distance from previous prime (2340439903) and next prime (2340439939).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2340439921 - 2¹³ = 2340431729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2340439951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83160 + ... + 107686.

It is an arithmetic number, because the mean of its divisors is an integer number (300590640).

Almost surely, 2^2340439921 is an apocalyptic number.

It is an amenable number.

2340439921 is a deficient number, since it is larger than the sum of its proper divisors (64285199).

2340439921 is a wasteful number, since it uses less digits than its factorization.

2340439921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27143.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 2340439921 is about 48378.0933998024. The cubic root of 2340439921 is about 1327.6975864064.

The spelling of 2340439921 in words is "two billion, three hundred forty million, four hundred thirty-nine thousand, nine hundred twenty-one".