109857953 has 4 divisors (see below), whose sum is σ = 111248640. Its totient is φ = 108467268.

The previous prime is 109857929. The next prime is 109857967. The reversal of 109857953 is 359758901.

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: 359758901 = 19 ⋅18934679.

It is a cyclic number.

It is not a de Polignac number, because 109857953 - 2²⁰ = 108809377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109857898 and 109857907.

It is not an unprimeable number, because it can be changed into a prime (109857653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695225 + ... + 695382.

It is an arithmetic number, because the mean of its divisors is an integer number (27812160).

Almost surely, 2^109857953 is an apocalyptic number.

It is an amenable number.

109857953 is a deficient number, since it is larger than the sum of its proper divisors (1390687).

109857953 is an equidigital number, since it uses as much as digits as its factorization.

109857953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390686.

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 109857953 is about 10481.3144690921. The cubic root of 109857953 is about 478.9356523757.

The spelling of 109857953 in words is "one hundred nine million, eight hundred fifty-seven thousand, nine hundred fifty-three".