2400039 has 6 divisors (see below), whose sum is σ = 3466736. Its totient is φ = 1600020.

The previous prime is 2400037. The next prime is 2400053. The reversal of 2400039 is 9300042.

It is not a de Polignac number, because 2400039 - 2¹ = 2400037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2399994 and 2400030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133327 + ... + 133344.

2^2400039 is an apocalyptic number.

2400039 is a deficient number, since it is larger than the sum of its proper divisors (1066697).

2400039 is a wasteful number, since it uses less digits than its factorization.

2400039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266677 (or 266674 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2400039 is about 1549.2059256277. The cubic root of 2400039 is about 133.8873152315.

The spelling of 2400039 in words is "two million, four hundred thousand, thirty-nine".