654345439 has 4 divisors (see below), whose sum is σ = 713831400. Its totient is φ = 594859480.

The previous prime is 654345437. The next prime is 654345449. The reversal of 654345439 is 934543456.

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 654345439 - 2¹ = 654345437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654345395 and 654345404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654345437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29742964 + ... + 29742985.

It is an arithmetic number, because the mean of its divisors is an integer number (178457850).

Almost surely, 2^654345439 is an apocalyptic number.

654345439 is a deficient number, since it is larger than the sum of its proper divisors (59485961).

654345439 is a wasteful number, since it uses less digits than its factorization.

654345439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59485960.

The product of its digits is 777600, while the sum is 43.

The square root of 654345439 is about 25580.1766803906. The cubic root of 654345439 is about 868.1651730203.

The spelling of 654345439 in words is "six hundred fifty-four million, three hundred forty-five thousand, four hundred thirty-nine".