401720753 has 4 divisors (see below), whose sum is σ = 459109440. Its totient is φ = 344332068.

The previous prime is 401720741. The next prime is 401720771. The reversal of 401720753 is 357027104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401720753 - 2¹⁰ = 401719729 is a prime.

It is a super-3 number, since 3×401720753³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401720713) 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 in 3 ways as a sum of consecutive naturals, for example, 28694333 + ... + 28694346.

It is an arithmetic number, because the mean of its divisors is an integer number (114777360).

Almost surely, 2^401720753 is an apocalyptic number.

It is an amenable number.

401720753 is a deficient number, since it is larger than the sum of its proper divisors (57388687).

401720753 is an equidigital number, since it uses as much as digits as its factorization.

401720753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57388686.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 401720753 is about 20042.9726587650. The cubic root of 401720753 is about 737.8613396609.

Adding to 401720753 its reverse (357027104), we get a palindrome (758747857).

The spelling of 401720753 in words is "four hundred one million, seven hundred twenty thousand, seven hundred fifty-three".