401748505 has 16 divisors (see below), whose sum is σ = 513296784. Its totient is φ = 300810240.

The previous prime is 401748497. The next prime is 401748569. The reversal of 401748505 is 505847104.

It can be written as a sum of positive squares in 8 ways, for example, as 15586704 + 386161801 = 3948^2 + 19651^2 .

It is not a de Polignac number, because 401748505 - 2³ = 401748497 is a prime.

It is a super-2 number, since 2×401748505² = 322803722539470050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2329 + ... + 28441.

It is an arithmetic number, because the mean of its divisors is an integer number (32081049).

Almost surely, 2^401748505 is an apocalyptic number.

It is an amenable number.

401748505 is a deficient number, since it is larger than the sum of its proper divisors (111548279).

401748505 is a wasteful number, since it uses less digits than its factorization.

401748505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26316.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 401748505 is about 20043.6649592833. The cubic root of 401748505 is about 737.8783304488.

The spelling of 401748505 in words is "four hundred one million, seven hundred forty-eight thousand, five hundred five".