28454999 has 2 divisors, whose sum is σ = 28455000. Its totient is φ = 28454998.

The previous prime is 28454983. The next prime is 28455001. The reversal of 28454999 is 99945482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28454999 - 2⁴ = 28454983 is a prime.

Together with 28455001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28454929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14227499 + 14227500.

It is an arithmetic number, because the mean of its divisors is an integer number (14227500).

Almost surely, 2^28454999 is an apocalyptic number.

28454999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28454999 is an equidigital number, since it uses as much as digits as its factorization.

28454999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 28454999 is about 5334.3227311440. The cubic root of 28454999 is about 305.2948827726.

The spelling of 28454999 in words is "twenty-eight million, four hundred fifty-four thousand, nine hundred ninety-nine".