28119899 has 2 divisors, whose sum is σ = 28119900. Its totient is φ = 28119898.

The previous prime is 28119863. The next prime is 28119913. The reversal of 28119899 is 99891182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28119899 - 2¹⁶ = 28054363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28119859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14059949 + 14059950.

It is an arithmetic number, because the mean of its divisors is an integer number (14059950).

Almost surely, 2^28119899 is an apocalyptic number.

28119899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28119899 is an equidigital number, since it uses as much as digits as its factorization.

28119899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 47.

The square root of 28119899 is about 5302.8199101987. The cubic root of 28119899 is about 304.0917132967.

The spelling of 28119899 in words is "twenty-eight million, one hundred nineteen thousand, eight hundred ninety-nine".