2539405 has 8 divisors (see below), whose sum is σ = 3324384. Its totient is φ = 1846800.

The previous prime is 2539399. The next prime is 2539423. The reversal of 2539405 is 5049352.

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

It is a de Polignac number, because none of the positive numbers 2^k-2539405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23031 + ... + 23140.

It is an arithmetic number, because the mean of its divisors is an integer number (415548).

2^2539405 is an apocalyptic number.

It is an amenable number.

2539405 is a deficient number, since it is larger than the sum of its proper divisors (784979).

2539405 is a wasteful number, since it uses less digits than its factorization.

2539405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46187.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2539405 is about 1593.5510660158. The cubic root of 2539405 is about 136.4302442945.

The spelling of 2539405 in words is "two million, five hundred thirty-nine thousand, four hundred five".