108432749 has 4 divisors (see below), whose sum is σ = 114811164. Its totient is φ = 102054336.

The previous prime is 108432743. The next prime is 108432773. The reversal of 108432749 is 947234801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947234801 = 29 ⋅32663269.

It can be written as a sum of positive squares in 2 ways, for example, as 58828900 + 49603849 = 7670^2 + 7043^2 .

It is a cyclic number.

It is not a de Polignac number, because 108432749 - 2¹⁶ = 108367213 is a prime.

It is a super-2 number, since 2×108432749² = 23515322111394002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108432743) 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, 3189182 + ... + 3189215.

It is an arithmetic number, because the mean of its divisors is an integer number (28702791).

Almost surely, 2^108432749 is an apocalyptic number.

It is an amenable number.

108432749 is a deficient number, since it is larger than the sum of its proper divisors (6378415).

108432749 is an equidigital number, since it uses as much as digits as its factorization.

108432749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378414.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 108432749 is about 10413.1046763201. The cubic root of 108432749 is about 476.8555292373.

It can be divided in two parts, 1084 and 32749, that added together give a palindrome (33833).

The spelling of 108432749 in words is "one hundred eight million, four hundred thirty-two thousand, seven hundred forty-nine".