401147505 has 32 divisors (see below), whose sum is σ = 777985920. Its totient is φ = 194495040.

The previous prime is 401147497. The next prime is 401147507. The reversal of 401147505 is 505741104.

It is a happy number.

401147505 is a `hidden beast` number, since 40 + 114 + 7 + 505 = 666.

It is not a de Polignac number, because 401147505 - 2³ = 401147497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (401147507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133582 + ... + 136551.

It is an arithmetic number, because the mean of its divisors is an integer number (24312060).

Almost surely, 2^401147505 is an apocalyptic number.

401147505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

401147505 is a deficient number, since it is larger than the sum of its proper divisors (376838415).

401147505 is a wasteful number, since it uses less digits than its factorization.

401147505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270158 (or 270152 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 401147505 is about 20028.6670799632. The cubic root of 401147505 is about 737.5102011421.

Adding to 401147505 its reverse (505741104), we get a palindrome (906888609).

The spelling of 401147505 in words is "four hundred one million, one hundred forty-seven thousand, five hundred five".