499146021 has 48 divisors (see below), whose sum is σ = 826837440. Its totient is φ = 287400960.

The previous prime is 499145951. The next prime is 499146071. The reversal of 499146021 is 120641994.

It is a happy number.

499146021 is a `hidden beast` number, since 49 + 9 + 1 + 4 + 602 + 1 = 666.

It is not a de Polignac number, because 499146021 - 2⁹ = 499145509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499146071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155925 + ... + 159093.

It is an arithmetic number, because the mean of its divisors is an integer number (17225780).

Almost surely, 2^499146021 is an apocalyptic number.

It is an amenable number.

499146021 is a deficient number, since it is larger than the sum of its proper divisors (327691419).

499146021 is a wasteful number, since it uses less digits than its factorization.

499146021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 499146021 is about 22341.5760634741. The cubic root of 499146021 is about 793.2483994276.

The spelling of 499146021 in words is "four hundred ninety-nine million, one hundred forty-six thousand, twenty-one".