23729849 has 32 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 18720000.

The previous prime is 23729837. The next prime is 23729873. The reversal of 23729849 is 94892732.

It is not a de Polignac number, because 23729849 - 2¹² = 23725753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23729149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234899 + ... + 234999.

It is an arithmetic number, because the mean of its divisors is an integer number (925344).

Almost surely, 2^23729849 is an apocalyptic number.

It is an amenable number.

23729849 is a deficient number, since it is larger than the sum of its proper divisors (5881159).

23729849 is a wasteful number, since it uses less digits than its factorization.

23729849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its digits is 217728, while the sum is 44.

The square root of 23729849 is about 4871.3292847025. The cubic root of 23729849 is about 287.3635354882.

It can be divided in two parts, 2372 and 9849, that added together give a palindrome (12221).

The spelling of 23729849 in words is "twenty-three million, seven hundred twenty-nine thousand, eight hundred forty-nine".