109401881 has 2 divisors, whose sum is σ = 109401882. Its totient is φ = 109401880.

The previous prime is 109401863. The next prime is 109401889. The reversal of 109401881 is 188104901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108889225 + 512656 = 10435^2 + 716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109401881 is a prime.

It is a super-2 number, since 2×109401881² = 23937543132676322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109401889) 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 as a sum of consecutive naturals, namely, 54700940 + 54700941.

It is an arithmetic number, because the mean of its divisors is an integer number (54700941).

Almost surely, 2^109401881 is an apocalyptic number.

It is an amenable number.

109401881 is a deficient number, since it is larger than the sum of its proper divisors (1).

109401881 is an equidigital number, since it uses as much as digits as its factorization.

109401881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 109401881 is about 10459.5354103325. The cubic root of 109401881 is about 478.2719707720.

It can be divided in two parts, 10940 and 1881, that added together give a palindrome (12821).

The spelling of 109401881 in words is "one hundred nine million, four hundred one thousand, eight hundred eighty-one".