405299859 has 32 divisors (see below), whose sum is σ = 588902400. Its totient is φ = 247188480.

The previous prime is 405299821. The next prime is 405299861. The reversal of 405299859 is 958992504.

It is not a de Polignac number, because 405299859 - 2⁷ = 405299731 is a prime.

It is a super-3 number, since 3×405299859³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (405299809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189307 + ... + 191435.

It is an arithmetic number, because the mean of its divisors is an integer number (18403200).

Almost surely, 2^405299859 is an apocalyptic number.

405299859 is a deficient number, since it is larger than the sum of its proper divisors (183602541).

405299859 is a wasteful number, since it uses less digits than its factorization.

405299859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The square root of 405299859 is about 20132.0604757685. The cubic root of 405299859 is about 740.0461737685.

The spelling of 405299859 in words is "four hundred five million, two hundred ninety-nine thousand, eight hundred fifty-nine".