477778890 has 32 divisors (see below), whose sum is σ = 1157809536. Its totient is φ = 126169920.

The previous prime is 477778867. The next prime is 477778907. The reversal of 477778890 is 98877774.

It is a self number, because there is not a number n which added to its sum of digits gives 477778890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74221 + ... + 80400.

It is an arithmetic number, because the mean of its divisors is an integer number (36181548).

Almost surely, 2^477778890 is an apocalyptic number.

477778890 is an abundant number, since it is smaller than the sum of its proper divisors (680030646).

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

477778890 is a wasteful number, since it uses less digits than its factorization.

477778890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154734.

The product of its (nonzero) digits is 5531904, while the sum is 57.

The square root of 477778890 is about 21858.1538561700. The cubic root of 477778890 is about 781.7639729159.

The spelling of 477778890 in words is "four hundred seventy-seven million, seven hundred seventy-eight thousand, eight hundred ninety".