9401881 has 2 divisors, whose sum is σ = 9401882. Its totient is φ = 9401880.

The previous prime is 9401879. The next prime is 9401921. The reversal of 9401881 is 1881049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7750656 + 1651225 = 2784^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 9401881 - 2¹ = 9401879 is a prime.

It is a super-2 number, since 2×9401881² = 176790732676322, which contains 22 as substring.

Together with 9401879, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9401981) 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, 4700940 + 4700941.

It is an arithmetic number, because the mean of its divisors is an integer number (4700941).

Almost surely, 2^9401881 is an apocalyptic number.

It is an amenable number.

9401881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9401881 is an equidigital number, since it uses as much as digits as its factorization.

9401881 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 31.

The square root of 9401881 is about 3066.2486852830. The cubic root of 9401881 is about 211.0595056893.

It can be divided in two parts, 940 and 1881, that multiplied together give a triangular number (1768140 = T₁₈₈₀).

The spelling of 9401881 in words is "nine million, four hundred one thousand, eight hundred eighty-one".