499993487 has 4 divisors (see below), whose sum is σ = 571421136. Its totient is φ = 428565840.

The previous prime is 499993457. The next prime is 499993499. The reversal of 499993487 is 784399994.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499993487 - 2⁶ = 499993423 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 (499993427) 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, 35713814 + ... + 35713827.

It is an arithmetic number, because the mean of its divisors is an integer number (142855284).

Almost surely, 2^499993487 is an apocalyptic number.

499993487 is a deficient number, since it is larger than the sum of its proper divisors (71427649).

499993487 is an equidigital number, since it uses as much as digits as its factorization.

499993487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71427648.

The product of its digits is 17635968, while the sum is 62.

The square root of 499993487 is about 22360.5341394163. The cubic root of 499993487 is about 793.6970797215.

The spelling of 499993487 in words is "four hundred ninety-nine million, nine hundred ninety-three thousand, four hundred eighty-seven".