28444499 has 2 divisors, whose sum is σ = 28444500. Its totient is φ = 28444498.

The previous prime is 28444469. The next prime is 28444511. The reversal of 28444499 is 99444482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28444499 - 2⁸ = 28444243 is a prime.

It is a super-2 number, since 2×28444499² = 1618179046722002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28444459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14222249 + 14222250.

It is an arithmetic number, because the mean of its divisors is an integer number (14222250).

Almost surely, 2^28444499 is an apocalyptic number.

28444499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28444499 is an equidigital number, since it uses as much as digits as its factorization.

28444499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 44.

The square root of 28444499 is about 5333.3384479142. The cubic root of 28444499 is about 305.2573265053.

The spelling of 28444499 in words is "twenty-eight million, four hundred forty-four thousand, four hundred ninety-nine".