494490997 has 24 divisors (see below), whose sum is σ = 675797472. Its totient is φ = 355672800.

The previous prime is 494490991. The next prime is 494491001. The reversal of 494490997 is 799094494.

It is not a de Polignac number, because 494490997 - 2³ = 494490989 is a prime.

It is a super-2 number, since 2×494490997² = 489042692228108018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494490991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28279 + ... + 42292.

It is an arithmetic number, because the mean of its divisors is an integer number (28158228).

Almost surely, 2^494490997 is an apocalyptic number.

It is an amenable number.

494490997 is a deficient number, since it is larger than the sum of its proper divisors (181306475).

494490997 is a wasteful number, since it uses less digits than its factorization.

494490997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70609 (or 70602 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 494490997 is about 22237.1535273740. The cubic root of 494490997 is about 790.7747550891.

The spelling of 494490997 in words is "four hundred ninety-four million, four hundred ninety thousand, nine hundred ninety-seven".