401959559 has 2 divisors, whose sum is σ = 401959560. Its totient is φ = 401959558.

The previous prime is 401959553. The next prime is 401959583. The reversal of 401959559 is 955959104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401959559 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401959553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200979779 + 200979780.

It is an arithmetic number, because the mean of its divisors is an integer number (200979780).

Almost surely, 2^401959559 is an apocalyptic number.

401959559 is a deficient number, since it is larger than the sum of its proper divisors (1).

401959559 is an equidigital number, since it uses as much as digits as its factorization.

401959559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 364500, while the sum is 47.

The square root of 401959559 is about 20048.9291235218. The cubic root of 401959559 is about 738.0075198202.

The spelling of 401959559 in words is "four hundred one million, nine hundred fifty-nine thousand, five hundred fifty-nine".