405109093 has 2 divisors, whose sum is σ = 405109094. Its totient is φ = 405109092.

The previous prime is 405109087. The next prime is 405109109. The reversal of 405109093 is 390901504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393704964 + 11404129 = 19842^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 405109093 - 2²⁵ = 371554661 is a prime.

It is a super-2 number, since 2×405109093² = 328226754462565298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405109993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202554546 + 202554547.

It is an arithmetic number, because the mean of its divisors is an integer number (202554547).

Almost surely, 2^405109093 is an apocalyptic number.

It is an amenable number.

405109093 is a deficient number, since it is larger than the sum of its proper divisors (1).

405109093 is an equidigital number, since it uses as much as digits as its factorization.

405109093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 405109093 is about 20127.3220523745. The cubic root of 405109093 is about 739.9300475634.

The spelling of 405109093 in words is "four hundred five million, one hundred nine thousand, ninety-three".