494088981 has 4 divisors (see below), whose sum is σ = 658785312. Its totient is φ = 329392652.

The previous prime is 494088953. The next prime is 494089019. The reversal of 494088981 is 189880494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 494088981 - 2⁷ = 494088853 is a prime.

It is a super-2 number, since 2×494088981² = 488247842291236722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494088911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82348161 + ... + 82348166.

It is an arithmetic number, because the mean of its divisors is an integer number (164696328).

Almost surely, 2^494088981 is an apocalyptic number.

It is an amenable number.

494088981 is a deficient number, since it is larger than the sum of its proper divisors (164696331).

494088981 is a wasteful number, since it uses less digits than its factorization.

494088981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164696330.

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 494088981 is about 22228.1124029909. The cubic root of 494088981 is about 790.5603997919.

The spelling of 494088981 in words is "four hundred ninety-four million, eighty-eight thousand, nine hundred eighty-one".