499739761 has 4 divisors (see below), whose sum is σ = 499831024. Its totient is φ = 499648500.

The previous prime is 499739753. The next prime is 499739777. The reversal of 499739761 is 167937994.

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 499739761 - 2³ = 499739753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499739741) 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, 36855 + ... + 48556.

It is an arithmetic number, because the mean of its divisors is an integer number (124957756).

Almost surely, 2^499739761 is an apocalyptic number.

It is an amenable number.

499739761 is a deficient number, since it is larger than the sum of its proper divisors (91263).

499739761 is an equidigital number, since it uses as much as digits as its factorization.

499739761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91262.

The product of its digits is 2571912, while the sum is 55.

The square root of 499739761 is about 22354.8598966757. The cubic root of 499739761 is about 793.5628008662.

It can be divided in two parts, 499739 and 761, that added together give a triangular number (500500 = T₁₀₀₀).

The spelling of 499739761 in words is "four hundred ninety-nine million, seven hundred thirty-nine thousand, seven hundred sixty-one".