109861399 has 8 divisors (see below), whose sum is σ = 113020208. Its totient is φ = 106712640.

The previous prime is 109861393. The next prime is 109861457. The reversal of 109861399 is 993168901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109861399 - 2¹³ = 109853207 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 (109861393) 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 7 ways as a sum of consecutive naturals, for example, 23419 + ... + 27715.

It is an arithmetic number, because the mean of its divisors is an integer number (14127526).

Almost surely, 2^109861399 is an apocalyptic number.

109861399 is a deficient number, since it is larger than the sum of its proper divisors (3158809).

109861399 is an equidigital number, since it uses as much as digits as its factorization.

109861399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 109861399 is about 10481.4788555814. The cubic root of 109861399 is about 478.9406600393.

The spelling of 109861399 in words is "one hundred nine million, eight hundred sixty-one thousand, three hundred ninety-nine".