2400539 has 4 divisors (see below), whose sum is σ = 2416800. Its totient is φ = 2384280.

The previous prime is 2400521. The next prime is 2400551. The reversal of 2400539 is 9350042.

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 2400539 - 2⁸ = 2400283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400589) 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, 7907 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (604200).

2^2400539 is an apocalyptic number.

2400539 is a deficient number, since it is larger than the sum of its proper divisors (16261).

2400539 is a wasteful number, since it uses less digits than its factorization.

2400539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16260.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2400539 is about 1549.3672902188. The cubic root of 2400539 is about 133.8966121651.

The spelling of 2400539 in words is "two million, four hundred thousand, five hundred thirty-nine".