109785401 has 16 divisors (see below), whose sum is σ = 129485760. Its totient is φ = 91990080.

The previous prime is 109785391. The next prime is 109785409. The reversal of 109785401 is 104587901.

It is a cyclic number.

It is not a de Polignac number, because 109785401 - 2¹⁰ = 109784377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109785409) 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 15 ways as a sum of consecutive naturals, for example, 635 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (8092860).

Almost surely, 2^109785401 is an apocalyptic number.

109785401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109785401 is a deficient number, since it is larger than the sum of its proper divisors (19700359).

109785401 is a wasteful number, since it uses less digits than its factorization.

109785401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14264.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 109785401 is about 10477.8528811966. The cubic root of 109785401 is about 478.8301968287.

The spelling of 109785401 in words is "one hundred nine million, seven hundred eighty-five thousand, four hundred one".