477209978 has 16 divisors (see below), whose sum is σ = 823288704. Its totient is φ = 203214960.

The previous prime is 477209963. The next prime is 477210011. The reversal of 477209978 is 879902774.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106358 + ... + 110753.

It is an arithmetic number, because the mean of its divisors is an integer number (51455544).

Almost surely, 2^477209978 is an apocalyptic number.

477209978 is a deficient number, since it is larger than the sum of its proper divisors (346078726).

477209978 is a wasteful number, since it uses less digits than its factorization.

477209978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217277.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 477209978 is about 21845.1362550111. The cubic root of 477209978 is about 781.4535562768.

The spelling of 477209978 in words is "four hundred seventy-seven million, two hundred nine thousand, nine hundred seventy-eight".