396043705 has 8 divisors (see below), whose sum is σ = 476876232. Its totient is φ = 315752448.

The previous prime is 396043699. The next prime is 396043721. The reversal of 396043705 is 507340693.

It can be written as a sum of positive squares in 4 ways, for example, as 205520896 + 190522809 = 14336^2 + 13803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396043705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 133704 + ... + 136633.

It is an arithmetic number, because the mean of its divisors is an integer number (59609529).

Almost surely, 2^396043705 is an apocalyptic number.

It is an amenable number.

396043705 is a deficient number, since it is larger than the sum of its proper divisors (80832527).

396043705 is a wasteful number, since it uses less digits than its factorization.

396043705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270635.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 396043705 is about 19900.8468412779. The cubic root of 396043705 is about 734.3690607155.

The spelling of 396043705 in words is "three hundred ninety-six million, forty-three thousand, seven hundred five".