406134878 has 8 divisors (see below), whose sum is σ = 619527960. Its totient is φ = 199625560.

The previous prime is 406134877. The next prime is 406134881. The reversal of 406134878 is 878431604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406134877) 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, 1720793 + ... + 1721028.

It is an arithmetic number, because the mean of its divisors is an integer number (77440995).

Almost surely, 2^406134878 is an apocalyptic number.

406134878 is a deficient number, since it is larger than the sum of its proper divisors (213393082).

406134878 is a wasteful number, since it uses less digits than its factorization.

406134878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441882.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 406134878 is about 20152.7883430557. The cubic root of 406134878 is about 740.5540518316.

The spelling of 406134878 in words is "four hundred six million, one hundred thirty-four thousand, eight hundred seventy-eight".