499311749 has 4 divisors (see below), whose sum is σ = 507774720. Its totient is φ = 490848780.

The previous prime is 499311739. The next prime is 499311859. The reversal of 499311749 is 947113994.

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.

It is a cyclic number.

It is not a de Polignac number, because 499311749 - 2¹⁶ = 499246213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499311739) 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, 4231397 + ... + 4231514.

It is an arithmetic number, because the mean of its divisors is an integer number (126943680).

Almost surely, 2^499311749 is an apocalyptic number.

It is an amenable number.

499311749 is a deficient number, since it is larger than the sum of its proper divisors (8462971).

499311749 is an equidigital number, since it uses as much as digits as its factorization.

499311749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8462970.

The product of its digits is 244944, while the sum is 47.

The square root of 499311749 is about 22345.2847151250. The cubic root of 499311749 is about 793.3361819724.

The spelling of 499311749 in words is "four hundred ninety-nine million, three hundred eleven thousand, seven hundred forty-nine".