99449289783 has 32 divisors (see below), whose sum is σ = 150855598080. Its totient is φ = 64716019200.

The previous prime is 99449289781. The next prime is 99449289787. The reversal of 99449289783 is 38798294499.

99449289783 is a `hidden beast` number, since 99 + 449 + 2 + 8 + 97 + 8 + 3 = 666.

It is not a de Polignac number, because 99449289783 - 2¹ = 99449289781 is a prime.

It is a super-2 number, since 2×99449289783² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99449289781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1832010 + ... + 1885512.

It is an arithmetic number, because the mean of its divisors is an integer number (4714237440).

Almost surely, 2^99449289783 is an apocalyptic number.

99449289783 is a deficient number, since it is larger than the sum of its proper divisors (51406308297).

99449289783 is a wasteful number, since it uses less digits than its factorization.

99449289783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55156 (or 55150 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The spelling of 99449289783 in words is "ninety-nine billion, four hundred forty-nine million, two hundred eighty-nine thousand, seven hundred eighty-three".