28283994407 has 2 divisors, whose sum is σ = 28283994408. Its totient is φ = 28283994406.

The previous prime is 28283994353. The next prime is 28283994413. The reversal of 28283994407 is 70449938282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28283994407 - 2¹⁸ = 28283732263 is a prime.

It is a super-3 number, since 3×28283994407³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28283994107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14141997203 + 14141997204.

It is an arithmetic number, because the mean of its divisors is an integer number (14141997204).

Almost surely, 2^28283994407 is an apocalyptic number.

28283994407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28283994407 is an equidigital number, since it uses as much as digits as its factorization.

28283994407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 28283994407 in words is "twenty-eight billion, two hundred eighty-three million, nine hundred ninety-four thousand, four hundred seven".