405968141 has 4 divisors (see below), whose sum is σ = 406590492. Its totient is φ = 405345792.

The previous prime is 405968137. The next prime is 405968179. The reversal of 405968141 is 141869504.

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 27510025 + 378458116 = 5245^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 405968141 - 2² = 405968137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405968095 and 405968104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405968191) 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, 310196 + ... + 311501.

It is an arithmetic number, because the mean of its divisors is an integer number (101647623).

Almost surely, 2^405968141 is an apocalyptic number.

It is an amenable number.

405968141 is a deficient number, since it is larger than the sum of its proper divisors (622351).

405968141 is an equidigital number, since it uses as much as digits as its factorization.

405968141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622350.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 405968141 is about 20148.6510962893. The cubic root of 405968141 is about 740.4526941552.

The spelling of 405968141 in words is "four hundred five million, nine hundred sixty-eight thousand, one hundred forty-one".