401967523 has 2 divisors, whose sum is σ = 401967524. Its totient is φ = 401967522.

The previous prime is 401967509. The next prime is 401967539. The reversal of 401967523 is 325769104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401967523 is a prime.

It is not a weakly prime, because it can be changed into another prime (401967583) 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, 200983761 + 200983762.

It is an arithmetic number, because the mean of its divisors is an integer number (200983762).

Almost surely, 2^401967523 is an apocalyptic number.

401967523 is a deficient number, since it is larger than the sum of its proper divisors (1).

401967523 is an equidigital number, since it uses as much as digits as its factorization.

401967523 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 37.

The square root of 401967523 is about 20049.1277366373. The cubic root of 401967523 is about 738.0123938205.

The spelling of 401967523 in words is "four hundred one million, nine hundred sixty-seven thousand, five hundred twenty-three".