404477378 has 8 divisors (see below), whose sum is σ = 615027468. Its totient is φ = 199468224.

The previous prime is 404477371. The next prime is 404477387. The reversal of 404477378 is 873774404.

It can be written as a sum of positive squares in 2 ways, for example, as 401080729 + 3396649 = 20027^2 + 1843^2 .

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

It is not an unprimeable number, because it can be changed into a prime (404477371) 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, 1385051 + ... + 1385342.

Almost surely, 2^404477378 is an apocalyptic number.

404477378 is a deficient number, since it is larger than the sum of its proper divisors (210550090).

404477378 is a wasteful number, since it uses less digits than its factorization.

404477378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770468.

The product of its (nonzero) digits is 526848, while the sum is 44.

The square root of 404477378 is about 20111.6229578818. The cubic root of 404477378 is about 739.5452392146.

The spelling of 404477378 in words is "four hundred four million, four hundred seventy-seven thousand, three hundred seventy-eight".