99983749 has 4 divisors (see below), whose sum is σ = 105865164. Its totient is φ = 94102336.

The previous prime is 99983717. The next prime is 99983753. The reversal of 99983749 is 94738999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44957025 + 55026724 = 6705^2 + 7418^2 .

It is a cyclic number.

It is not a de Polignac number, because 99983749 - 2⁵ = 99983717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99983693 and 99983702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99983759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2940682 + ... + 2940715.

It is an arithmetic number, because the mean of its divisors is an integer number (26466291).

Almost surely, 2^99983749 is an apocalyptic number.

It is an amenable number.

99983749 is a deficient number, since it is larger than the sum of its proper divisors (5881415).

99983749 is a wasteful number, since it uses less digits than its factorization.

99983749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881414.

The product of its digits is 4408992, while the sum is 58.

The square root of 99983749 is about 9999.1874169854. The cubic root of 99983749 is about 464.1337385124.

It can be divided in two parts, 999 and 83749, that added together give a palindrome (84748).

The spelling of 99983749 in words is "ninety-nine million, nine hundred eighty-three thousand, seven hundred forty-nine".