405700117 has 2 divisors, whose sum is σ = 405700118. Its totient is φ = 405700116.

The previous prime is 405700091. The next prime is 405700187. The reversal of 405700117 is 711007504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231222436 + 174477681 = 15206^2 + 13209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405700117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405700091 and 405700100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405700187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202850058 + 202850059.

It is an arithmetic number, because the mean of its divisors is an integer number (202850059).

Almost surely, 2^405700117 is an apocalyptic number.

It is an amenable number.

405700117 is a deficient number, since it is larger than the sum of its proper divisors (1).

405700117 is an equidigital number, since it uses as much as digits as its factorization.

405700117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 405700117 is about 20141.9988332837. The cubic root of 405700117 is about 740.2897069946.

The spelling of 405700117 in words is "four hundred five million, seven hundred thousand, one hundred seventeen".