405794357 has 2 divisors, whose sum is σ = 405794358. Its totient is φ = 405794356.

The previous prime is 405794351. The next prime is 405794401. The reversal of 405794357 is 753497504.

It is an a-pointer prime, because the next prime (405794401) can be obtained adding 405794357 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338044996 + 67749361 = 18386^2 + 8231^2 .

It is a cyclic number.

It is not a de Polignac number, because 405794357 - 2⁸ = 405794101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405794351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202897178 + 202897179.

It is an arithmetic number, because the mean of its divisors is an integer number (202897179).

Almost surely, 2^405794357 is an apocalyptic number.

It is an amenable number.

405794357 is a deficient number, since it is larger than the sum of its proper divisors (1).

405794357 is an equidigital number, since it uses as much as digits as its factorization.

405794357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 405794357 is about 20144.3380879095. The cubic root of 405794357 is about 740.3470231401.

The spelling of 405794357 in words is "four hundred five million, seven hundred ninety-four thousand, three hundred fifty-seven".