499649121 has 32 divisors (see below), whose sum is σ = 765114240. Its totient is φ = 322056000.

The previous prime is 499649113. The next prime is 499649123. The reversal of 499649121 is 121946994.

It is not a de Polignac number, because 499649121 - 2³ = 499649113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499649123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115131 + ... + 119391.

It is an arithmetic number, because the mean of its divisors is an integer number (23909820).

Almost surely, 2^499649121 is an apocalyptic number.

It is an amenable number.

499649121 is a deficient number, since it is larger than the sum of its proper divisors (265465119).

499649121 is a wasteful number, since it uses less digits than its factorization.

499649121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414 (or 4408 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 499649121 is about 22352.8325050764. The cubic root of 499649121 is about 793.5148206393.

The spelling of 499649121 in words is "four hundred ninety-nine million, six hundred forty-nine thousand, one hundred twenty-one".