2658439 has 4 divisors (see below), whose sum is σ = 3038224. Its totient is φ = 2278656.

The previous prime is 2658437. The next prime is 2658449. The reversal of 2658439 is 9348562.

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 2658439 - 2¹ = 2658437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2658398 and 2658407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658437) 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, 189882 + ... + 189895.

It is an arithmetic number, because the mean of its divisors is an integer number (759556).

2^2658439 is an apocalyptic number.

2658439 is a deficient number, since it is larger than the sum of its proper divisors (379785).

2658439 is an equidigital number, since it uses as much as digits as its factorization.

2658439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379784.

The product of its digits is 51840, while the sum is 37.

The square root of 2658439 is about 1630.4720175458. The cubic root of 2658439 is about 138.5294893047.

The spelling of 2658439 in words is "two million, six hundred fifty-eight thousand, four hundred thirty-nine".