494786421 has 16 divisors (see below), whose sum is σ = 733392000. Its totient is φ = 329688864.

The previous prime is 494786417. The next prime is 494786441. The reversal of 494786421 is 124687494.

It is not a de Polignac number, because 494786421 - 2² = 494786417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494786441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71680 + ... + 78278.

It is an arithmetic number, because the mean of its divisors is an integer number (45837000).

Almost surely, 2^494786421 is an apocalyptic number.

It is an amenable number.

494786421 is a deficient number, since it is larger than the sum of its proper divisors (238605579).

494786421 is a wasteful number, since it uses less digits than its factorization.

494786421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385 (or 9379 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 494786421 is about 22243.7951123454. The cubic root of 494786421 is about 790.9322013893.

The spelling of 494786421 in words is "four hundred ninety-four million, seven hundred eighty-six thousand, four hundred twenty-one".