499979949 has 16 divisors (see below), whose sum is σ = 762453120. Its totient is φ = 285485760.

The previous prime is 499979947. The next prime is 499979951. The reversal of 499979949 is 949979994.

It is an interprime number because it is at equal distance from previous prime (499979947) and next prime (499979951).

It is not a de Polignac number, because 499979949 - 2¹ = 499979947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499979947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21679 + ... + 38339.

It is an arithmetic number, because the mean of its divisors is an integer number (47653320).

Almost surely, 2^499979949 is an apocalyptic number.

It is an amenable number.

499979949 is a deficient number, since it is larger than the sum of its proper divisors (262473171).

499979949 is a wasteful number, since it uses less digits than its factorization.

499979949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100.

The product of its digits is 59521392, while the sum is 69.

The square root of 499979949 is about 22360.2314165127. The cubic root of 499979949 is about 793.6899161828.

It can be divided in two parts, 4999 and 79949, that added together give a palindrome (84948).

The spelling of 499979949 in words is "four hundred ninety-nine million, nine hundred seventy-nine thousand, nine hundred forty-nine".