99743749 has 16 divisors (see below), whose sum is σ = 123241600. Its totient is φ = 78801984.

The previous prime is 99743747. The next prime is 99743773. The reversal of 99743749 is 94734799.

It is a cyclic number.

It is not a de Polignac number, because 99743749 - 2¹ = 99743747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99743696 and 99743705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99743747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5214 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (7702600).

Almost surely, 2^99743749 is an apocalyptic number.

It is an amenable number.

99743749 is a deficient number, since it is larger than the sum of its proper divisors (23497851).

99743749 is a wasteful number, since it uses less digits than its factorization.

99743749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20332.

The product of its digits is 1714608, while the sum is 52.

The square root of 99743749 is about 9987.1792313946. The cubic root of 99743749 is about 463.7620736317.

The spelling of 99743749 in words is "ninety-nine million, seven hundred forty-three thousand, seven hundred forty-nine".