405117941 has 4 divisors (see below), whose sum is σ = 405477900. Its totient is φ = 404757984.

The previous prime is 405117931. The next prime is 405117949. The reversal of 405117941 is 149711504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238578916 + 166539025 = 15446^2 + 12905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405117941 is a prime.

It is a super-2 number, since 2×405117941² = 328241092240158962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405117898 and 405117907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405117949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178286 + ... + 180543.

It is an arithmetic number, because the mean of its divisors is an integer number (101369475).

Almost surely, 2^405117941 is an apocalyptic number.

It is an amenable number.

405117941 is a deficient number, since it is larger than the sum of its proper divisors (359959).

405117941 is a wasteful number, since it uses less digits than its factorization.

405117941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359958.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 405117941 is about 20127.5418519003. The cubic root of 405117941 is about 739.9354344690.

The spelling of 405117941 in words is "four hundred five million, one hundred seventeen thousand, nine hundred forty-one".