499998745 has 16 divisors (see below), whose sum is σ = 611190720. Its totient is φ = 392560704.

The previous prime is 499998683. The next prime is 499998749. The reversal of 499998745 is 547899994.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499998745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499998749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250642 + ... + 252628.

It is an arithmetic number, because the mean of its divisors is an integer number (38199420).

Almost surely, 2^499998745 is an apocalyptic number.

It is an amenable number.

499998745 is a deficient number, since it is larger than the sum of its proper divisors (111191975).

499998745 is a wasteful number, since it uses less digits than its factorization.

499998745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904.

The product of its digits is 29393280, while the sum is 64.

The square root of 499998745 is about 22360.6517123272. The cubic root of 499998745 is about 793.6998619208.

The spelling of 499998745 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, seven hundred forty-five".