109689533 has 4 divisors (see below), whose sum is σ = 111234528. Its totient is φ = 108144540.

The previous prime is 109689523. The next prime is 109689539. The reversal of 109689533 is 335986901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335986901 = 15991 ⋅21011.

It is a cyclic number.

It is not a de Polignac number, because 109689533 - 2⁶ = 109689469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109689539) 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, 772391 + ... + 772532.

It is an arithmetic number, because the mean of its divisors is an integer number (27808632).

Almost surely, 2^109689533 is an apocalyptic number.

It is an amenable number.

109689533 is a deficient number, since it is larger than the sum of its proper divisors (1544995).

109689533 is an equidigital number, since it uses as much as digits as its factorization.

109689533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544994.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 109689533 is about 10473.2770898129. The cubic root of 109689533 is about 478.6907798051.

The spelling of 109689533 in words is "one hundred nine million, six hundred eighty-nine thousand, five hundred thirty-three".