401193587 has 2 divisors, whose sum is σ = 401193588. Its totient is φ = 401193586.

The previous prime is 401193509. The next prime is 401193589. The reversal of 401193587 is 785391104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401193587 - 2¹² = 401189491 is a prime.

Together with 401193589, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401193587.

It is not a weakly prime, because it can be changed into another prime (401193589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200596793 + 200596794.

It is an arithmetic number, because the mean of its divisors is an integer number (200596794).

Almost surely, 2^401193587 is an apocalyptic number.

401193587 is a deficient number, since it is larger than the sum of its proper divisors (1).

401193587 is an equidigital number, since it uses as much as digits as its factorization.

401193587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 401193587 is about 20029.8174479949. The cubic root of 401193587 is about 737.5384406661.

The spelling of 401193587 in words is "four hundred one million, one hundred ninety-three thousand, five hundred eighty-seven".