405838375 has 8 divisors (see below), whose sum is σ = 506486448. Its totient is φ = 324670600.

The previous prime is 405838351. The next prime is 405838387. The reversal of 405838375 is 573838504.

It is not a de Polignac number, because 405838375 - 2⁹ = 405837863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623229 + ... + 1623478.

It is an arithmetic number, because the mean of its divisors is an integer number (63310806).

Almost surely, 2^405838375 is an apocalyptic number.

405838375 is a deficient number, since it is larger than the sum of its proper divisors (100648073).

405838375 is an equidigital number, since it uses as much as digits as its factorization.

405838375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246722 (or 3246712 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 405838375 is about 20145.4306233448. The cubic root of 405838375 is about 740.3737915565.

The spelling of 405838375 in words is "four hundred five million, eight hundred thirty-eight thousand, three hundred seventy-five".