499549949 has 4 divisors (see below), whose sum is σ = 521269536. Its totient is φ = 477830364.

The previous prime is 499549931. The next prime is 499549951. The reversal of 499549949 is 949945994.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949945994 = 2 ⋅474972997.

It is a cyclic number.

It is not a de Polignac number, because 499549949 - 2¹⁶ = 499484413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499549891 and 499549900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499549549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10859759 + ... + 10859804.

It is an arithmetic number, because the mean of its divisors is an integer number (130317384).

Almost surely, 2^499549949 is an apocalyptic number.

It is an amenable number.

499549949 is a deficient number, since it is larger than the sum of its proper divisors (21719587).

499549949 is a wasteful number, since it uses less digits than its factorization.

499549949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21719586.

The product of its digits is 18895680, while the sum is 62.

The square root of 499549949 is about 22350.6140631527. The cubic root of 499549949 is about 793.4623173555.

The spelling of 499549949 in words is "four hundred ninety-nine million, five hundred forty-nine thousand, nine hundred forty-nine".