2400839 has 8 divisors (see below), whose sum is σ = 2759328. Its totient is φ = 2046240.

The previous prime is 2400833. The next prime is 2400841. The reversal of 2400839 is 9380042.

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

It is not a de Polignac number, because 2400839 - 2¹² = 2396743 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 (2400833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (344916).

2^2400839 is an apocalyptic number.

2400839 is a deficient number, since it is larger than the sum of its proper divisors (358489).

2400839 is a wasteful number, since it uses less digits than its factorization.

2400839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2400839 is about 1549.4641009071. The cubic root of 2400839 is about 133.9021897056.

The spelling of 2400839 in words is "two million, four hundred thousand, eight hundred thirty-nine".