28869983 has 2 divisors, whose sum is σ = 28869984. Its totient is φ = 28869982.

The previous prime is 28869979. The next prime is 28869989. The reversal of 28869983 is 38996882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28869983 - 2² = 28869979 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28869989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14434991 + 14434992.

It is an arithmetic number, because the mean of its divisors is an integer number (14434992).

Almost surely, 2^28869983 is an apocalyptic number.

28869983 is a deficient number, since it is larger than the sum of its proper divisors (1).

28869983 is an equidigital number, since it uses as much as digits as its factorization.

28869983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 53.

The square root of 28869983 is about 5373.0794708435. The cubic root of 28869983 is about 306.7718528323.

The spelling of 28869983 in words is "twenty-eight million, eight hundred sixty-nine thousand, nine hundred eighty-three".