405338755 has 8 divisors (see below), whose sum is σ = 491223024. Its totient is φ = 321060000.

The previous prime is 405338743. The next prime is 405338777. The reversal of 405338755 is 557833504.

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

It is not a de Polignac number, because 405338755 - 2⁹ = 405338243 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400821 + ... + 401830.

It is an arithmetic number, because the mean of its divisors is an integer number (61402878).

Almost surely, 2^405338755 is an apocalyptic number.

405338755 is a deficient number, since it is larger than the sum of its proper divisors (85884269).

405338755 is a wasteful number, since it uses less digits than its factorization.

405338755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802757.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 405338755 is about 20133.0264739308. The cubic root of 405338755 is about 740.0698467064.

The spelling of 405338755 in words is "four hundred five million, three hundred thirty-eight thousand, seven hundred fifty-five".