477687138 has 32 divisors (see below), whose sum is σ = 998580096. Its totient is φ = 152051328.

The previous prime is 477687137. The next prime is 477687139. The reversal of 477687138 is 831786774.

It is an interprime number because it is at equal distance from previous prime (477687137) and next prime (477687139).

It is not an unprimeable number, because it can be changed into a prime (477687137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90870 + ... + 95982.

It is an arithmetic number, because the mean of its divisors is an integer number (31205628).

Almost surely, 2^477687138 is an apocalyptic number.

477687138 is an abundant number, since it is smaller than the sum of its proper divisors (520892958).

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

477687138 is a wasteful number, since it uses less digits than its factorization.

477687138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818.

The product of its digits is 1580544, while the sum is 51.

The square root of 477687138 is about 21856.0549505166. The cubic root of 477687138 is about 781.7139267533.

The spelling of 477687138 in words is "four hundred seventy-seven million, six hundred eighty-seven thousand, one hundred thirty-eight".