478403890 has 8 divisors (see below), whose sum is σ = 861127020. Its totient is φ = 191361552.

The previous prime is 478403843. The next prime is 478403909. The reversal of 478403890 is 98304874.

It can be written as a sum of positive squares in 2 ways, for example, as 467467641 + 10936249 = 21621^2 + 3307^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23920185 + ... + 23920204.

Almost surely, 2^478403890 is an apocalyptic number.

478403890 is a deficient number, since it is larger than the sum of its proper divisors (382723130).

478403890 is a wasteful number, since it uses less digits than its factorization.

478403890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47840396.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 478403890 is about 21872.4459080369. The cubic root of 478403890 is about 782.1047090424.

The spelling of 478403890 in words is "four hundred seventy-eight million, four hundred three thousand, eight hundred ninety".