401321747 has 2 divisors, whose sum is σ = 401321748. Its totient is φ = 401321746.

The previous prime is 401321741. The next prime is 401321801. The reversal of 401321747 is 747123104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401321747 - 2¹⁴ = 401305363 is a prime.

It is a super-2 number, since 2×401321747² = 322118289230264018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401321741) 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, 200660873 + 200660874.

It is an arithmetic number, because the mean of its divisors is an integer number (200660874).

Almost surely, 2^401321747 is an apocalyptic number.

401321747 is a deficient number, since it is larger than the sum of its proper divisors (1).

401321747 is an equidigital number, since it uses as much as digits as its factorization.

401321747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 401321747 is about 20033.0164228955. The cubic root of 401321747 is about 737.6169670653.

The spelling of 401321747 in words is "four hundred one million, three hundred twenty-one thousand, seven hundred forty-seven".