499936491 has 12 divisors (see below), whose sum is σ = 723523320. Its totient is φ = 332648160.

The previous prime is 499936469. The next prime is 499936499. The reversal of 499936491 is 194639994.

499936491 is a `hidden beast` number, since 499 + 9 + 3 + 64 + 91 = 666.

It is not a de Polignac number, because 499936491 - 2⁷ = 499936363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499936499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48621 + ... + 57998.

It is an arithmetic number, because the mean of its divisors is an integer number (60293610).

Almost surely, 2^499936491 is an apocalyptic number.

499936491 is a deficient number, since it is larger than the sum of its proper divisors (223586829).

499936491 is a wasteful number, since it uses less digits than its factorization.

499936491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107146 (or 107143 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 499936491 is about 22359.2596254885. The cubic root of 499936491 is about 793.6669198101. Note that the first 3 decimals are identical.

The spelling of 499936491 in words is "four hundred ninety-nine million, nine hundred thirty-six thousand, four hundred ninety-one".