140481917 has 2 divisors, whose sum is σ = 140481918. Its totient is φ = 140481916.

The previous prime is 140481889. The next prime is 140481941. The reversal of 140481917 is 719184041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112487236 + 27994681 = 10606^2 + 5291^2 .

It is an emirp because it is prime and its reverse (719184041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140481917 - 2¹⁸ = 140219773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140481967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70240958 + 70240959.

It is an arithmetic number, because the mean of its divisors is an integer number (70240959).

Almost surely, 2^140481917 is an apocalyptic number.

It is an amenable number.

140481917 is a deficient number, since it is larger than the sum of its proper divisors (1).

140481917 is an equidigital number, since it uses as much as digits as its factorization.

140481917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 140481917 is about 11852.5067812678. The cubic root of 140481917 is about 519.8445257582.

The spelling of 140481917 in words is "one hundred forty million, four hundred eighty-one thousand, nine hundred seventeen".