405881041 has 2 divisors, whose sum is σ = 405881042. Its totient is φ = 405881040.

The previous prime is 405881027. The next prime is 405881053. The reversal of 405881041 is 140188504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218300625 + 187580416 = 14775^2 + 13696^2 .

It is a cyclic number.

It is not a de Polignac number, because 405881041 - 2¹⁵ = 405848273 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 405880994 and 405881012.

It is not a weakly prime, because it can be changed into another prime (405881141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202940520 + 202940521.

It is an arithmetic number, because the mean of its divisors is an integer number (202940521).

Almost surely, 2^405881041 is an apocalyptic number.

It is an amenable number.

405881041 is a deficient number, since it is larger than the sum of its proper divisors (1).

405881041 is an equidigital number, since it uses as much as digits as its factorization.

405881041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 405881041 is about 20146.4895453277. The cubic root of 405881041 is about 740.3997359416.

The spelling of 405881041 in words is "four hundred five million, eight hundred eighty-one thousand, forty-one".