99281383 has 2 divisors, whose sum is σ = 99281384. Its totient is φ = 99281382.

The previous prime is 99281339. The next prime is 99281389. The reversal of 99281383 is 38318299.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99281383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99281389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49640691 + 49640692.

It is an arithmetic number, because the mean of its divisors is an integer number (49640692).

Almost surely, 2^99281383 is an apocalyptic number.

99281383 is a deficient number, since it is larger than the sum of its proper divisors (1).

99281383 is an equidigital number, since it uses as much as digits as its factorization.

99281383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 99281383 is about 9964.0043657156. The cubic root of 99281383 is about 463.0443678356.

It can be divided in two parts, 9928 and 1383, that added together give a palindrome (11311).

The spelling of 99281383 in words is "ninety-nine million, two hundred eighty-one thousand, three hundred eighty-three".