494088138 has 48 divisors (see below), whose sum is σ = 1109721600. Its totient is φ = 158689440.

The previous prime is 494088113. The next prime is 494088181. The reversal of 494088138 is 831880494.

It is a super-2 number, since 2×494088138² = 488246176224614088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 494088093 and 494088102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475023 + ... + 476061.

It is an arithmetic number, because the mean of its divisors is an integer number (23119200).

Almost surely, 2^494088138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494088138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554860800).

494088138 is an abundant number, since it is smaller than the sum of its proper divisors (615633462).

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

494088138 is a wasteful number, since it uses less digits than its factorization.

494088138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 494088138 is about 22228.0934405090. The cubic root of 494088138 is about 790.5599501814.

The spelling of 494088138 in words is "four hundred ninety-four million, eighty-eight thousand, one hundred thirty-eight".