405416478 has 8 divisors (see below), whose sum is σ = 810832968. Its totient is φ = 135138824.

The previous prime is 405416477. The next prime is 405416497. The reversal of 405416478 is 874614504.

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

405416478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405416477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33784701 + ... + 33784712.

It is an arithmetic number, because the mean of its divisors is an integer number (101354121).

Almost surely, 2^405416478 is an apocalyptic number.

405416478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405416478 is a wasteful number, since it uses less digits than its factorization.

405416478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67569418.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 405416478 is about 20134.9566177829. The cubic root of 405416478 is about 740.1171460512.

The spelling of 405416478 in words is "four hundred five million, four hundred sixteen thousand, four hundred seventy-eight".