499735657 has 4 divisors (see below), whose sum is σ = 499783936. Its totient is φ = 499687380.

The previous prime is 499735633. The next prime is 499735673. The reversal of 499735657 is 756537994.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 499735657 - 2¹⁹ = 499211369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499735598 and 499735607.

It is not an unprimeable number, because it can be changed into a prime (499735057) 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, 1593 + ... + 31654.

It is an arithmetic number, because the mean of its divisors is an integer number (124945984).

Almost surely, 2^499735657 is an apocalyptic number.

It is an amenable number.

499735657 is a deficient number, since it is larger than the sum of its proper divisors (48279).

499735657 is a wasteful number, since it uses less digits than its factorization.

499735657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48278.

The product of its digits is 7144200, while the sum is 55.

The square root of 499735657 is about 22354.7681043665. The cubic root of 499735657 is about 793.5606285418.

The spelling of 499735657 in words is "four hundred ninety-nine million, seven hundred thirty-five thousand, six hundred fifty-seven".