28966321439 has 8 divisors (see below), whose sum is σ = 31602613968. Its totient is φ = 26330527360.

The previous prime is 28966321399. The next prime is 28966321441. The reversal of 28966321439 is 93412366982.

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

It is a cyclic number.

It is not a de Polignac number, because 28966321439 - 2⁸ = 28966321183 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 (28966326439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549 + ... + 240705.

It is an arithmetic number, because the mean of its divisors is an integer number (3950326746).

Almost surely, 2^28966321439 is an apocalyptic number.

28966321439 is a deficient number, since it is larger than the sum of its proper divisors (2636292529).

28966321439 is a wasteful number, since it uses less digits than its factorization.

28966321439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249225.

The product of its digits is 3359232, while the sum is 53.

The spelling of 28966321439 in words is "twenty-eight billion, nine hundred sixty-six million, three hundred twenty-one thousand, four hundred thirty-nine".