654140829 has 4 divisors (see below), whose sum is σ = 872187776. Its totient is φ = 436093884.

The previous prime is 654140813. The next prime is 654140831. The reversal of 654140829 is 928041456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 654140829 - 2⁴ = 654140813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654140869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109023469 + ... + 109023474.

It is an arithmetic number, because the mean of its divisors is an integer number (218046944).

Almost surely, 2^654140829 is an apocalyptic number.

It is an amenable number.

654140829 is a deficient number, since it is larger than the sum of its proper divisors (218046947).

654140829 is a wasteful number, since it uses less digits than its factorization.

654140829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218046946.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 654140829 is about 25576.1769817148. The cubic root of 654140829 is about 868.0746735257.

The spelling of 654140829 in words is "six hundred fifty-four million, one hundred forty thousand, eight hundred twenty-nine".