485444138 has 4 divisors (see below), whose sum is σ = 728166210. Its totient is φ = 242722068.

The previous prime is 485444123. The next prime is 485444143. The reversal of 485444138 is 831444584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 464531809 + 20912329 = 21553^2 + 4573^2 .

It is a super-2 number, since 2×485444138² = 471312022237126088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 485444095 and 485444104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121361033 + ... + 121361036.

Almost surely, 2^485444138 is an apocalyptic number.

485444138 is a deficient number, since it is larger than the sum of its proper divisors (242722072).

485444138 is a wasteful number, since it uses less digits than its factorization.

485444138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242722071.

The product of its digits is 245760, while the sum is 41.

The square root of 485444138 is about 22032.7968719362. The cubic root of 485444138 is about 785.9225568842.

The spelling of 485444138 in words is "four hundred eighty-five million, four hundred forty-four thousand, one hundred thirty-eight".