477138905 has 8 divisors (see below), whose sum is σ = 572830152. Its totient is φ = 381535488.

The previous prime is 477138899. The next prime is 477138911. The reversal of 477138905 is 509831774.

It is an interprime number because it is at equal distance from previous prime (477138899) and next prime (477138911).

It can be written as a sum of positive squares in 4 ways, for example, as 152670736 + 324468169 = 12356^2 + 18013^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 477138905 - 2¹⁶ = 477073369 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 9344 + ... + 32273.

It is an arithmetic number, because the mean of its divisors is an integer number (71603769).

Almost surely, 2^477138905 is an apocalyptic number.

It is an amenable number.

477138905 is a deficient number, since it is larger than the sum of its proper divisors (95691247).

477138905 is a wasteful number, since it uses less digits than its factorization.

477138905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43915.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 477138905 is about 21843.5094478886. The cubic root of 477138905 is about 781.4147592352.

The spelling of 477138905 in words is "four hundred seventy-seven million, one hundred thirty-eight thousand, nine hundred five".