499973139 has 24 divisors (see below), whose sum is σ = 737056320. Its totient is φ = 326492208.

The previous prime is 499973113. The next prime is 499973161. The reversal of 499973139 is 931379994.

499973139 is a `hidden beast` number, since 499 + 97 + 31 + 39 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-499973139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499973189) 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 23 ways as a sum of consecutive naturals, for example, 161484 + ... + 164550.

It is an arithmetic number, because the mean of its divisors is an integer number (30710680).

Almost surely, 2^499973139 is an apocalyptic number.

499973139 is a deficient number, since it is larger than the sum of its proper divisors (237083181).

499973139 is a wasteful number, since it uses less digits than its factorization.

499973139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439 (or 3436 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 499973139 is about 22360.0791367115. The cubic root of 499973139 is about 793.6863126697.

The spelling of 499973139 in words is "four hundred ninety-nine million, nine hundred seventy-three thousand, one hundred thirty-nine".