401159947 has 2 divisors, whose sum is σ = 401159948. Its totient is φ = 401159946.

The previous prime is 401159917. The next prime is 401159953. The reversal of 401159947 is 749951104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401159947 - 2⁷ = 401159819 is a prime.

It is not a weakly prime, because it can be changed into another prime (401159917) 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, 200579973 + 200579974.

It is an arithmetic number, because the mean of its divisors is an integer number (200579974).

Almost surely, 2^401159947 is an apocalyptic number.

401159947 is a deficient number, since it is larger than the sum of its proper divisors (1).

401159947 is an equidigital number, since it uses as much as digits as its factorization.

401159947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 401159947 is about 20028.9776823481. The cubic root of 401159947 is about 737.5178259409.

The spelling of 401159947 in words is "four hundred one million, one hundred fifty-nine thousand, nine hundred forty-seven".