28925927939 has 16 divisors (see below), whose sum is σ = 30161224800. Its totient is φ = 27706796544.

The previous prime is 28925927929. The next prime is 28925928029. The reversal of 28925927939 is 93972952982.

It is a cyclic number.

It is not a de Polignac number, because 28925927939 - 2⁴ = 28925927923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28925927929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9983339 + ... + 9986235.

It is an arithmetic number, because the mean of its divisors is an integer number (1885076550).

Almost surely, 2^28925927939 is an apocalyptic number.

28925927939 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28925927939 is a deficient number, since it is larger than the sum of its proper divisors (1235296861).

28925927939 is a wasteful number, since it uses less digits than its factorization.

28925927939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542.

The product of its digits is 44089920, while the sum is 65.

The spelling of 28925927939 in words is "twenty-eight billion, nine hundred twenty-five million, nine hundred twenty-seven thousand, nine hundred thirty-nine".