405766093 has 2 divisors, whose sum is σ = 405766094. Its totient is φ = 405766092.

The previous prime is 405766063. The next prime is 405766111. The reversal of 405766093 is 390667504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290804809 + 114961284 = 17053^2 + 10722^2 .

It is a cyclic number.

It is not a de Polignac number, because 405766093 - 2²⁵ = 372211661 is a prime.

It is a super-2 number, since 2×405766093² = 329292244456969298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405766063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202883046 + 202883047.

It is an arithmetic number, because the mean of its divisors is an integer number (202883047).

Almost surely, 2^405766093 is an apocalyptic number.

It is an amenable number.

405766093 is a deficient number, since it is larger than the sum of its proper divisors (1).

405766093 is an equidigital number, since it uses as much as digits as its factorization.

405766093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 405766093 is about 20143.6365386193. The cubic root of 405766093 is about 740.3298340937.

The spelling of 405766093 in words is "four hundred five million, seven hundred sixty-six thousand, ninety-three".