28948894463999 has 8 divisors (see below), whose sum is σ = 30473683952640. Its totient is φ = 27424221321816.

The previous prime is 28948894463989. The next prime is 28948894464023. The reversal of 28948894463999 is 99936449884982.

It is a happy number.

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 28948894463999 - 2³⁶ = 28880174987263 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 (28948894463989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28575647 + ... + 29571360.

It is an arithmetic number, because the mean of its divisors is an integer number (3809210494080).

Almost surely, 2^{28948894463999} is an apocalyptic number.

28948894463999 is a deficient number, since it is larger than the sum of its proper divisors (1524789488641).

28948894463999 is a wasteful number, since it uses less digits than its factorization.

28948894463999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58173229.

The product of its digits is 69657034752, while the sum is 92.

The spelling of 28948894463999 in words is "twenty-eight trillion, nine hundred forty-eight billion, eight hundred ninety-four million, four hundred sixty-three thousand, nine hundred ninety-nine".