507688399 has 4 divisors (see below), whose sum is σ = 507770536. Its totient is φ = 507606264.

The previous prime is 507688387. The next prime is 507688403. The reversal of 507688399 is 993886705.

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 507688399 - 2⁵ = 507688367 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 (507683399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30969 + ... + 44434.

It is an arithmetic number, because the mean of its divisors is an integer number (126942634).

Almost surely, 2^507688399 is an apocalyptic number.

507688399 is a deficient number, since it is larger than the sum of its proper divisors (82137).

507688399 is an equidigital number, since it uses as much as digits as its factorization.

507688399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82136.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 507688399 is about 22531.9417494365. The cubic root of 507688399 is about 797.7480412797.

The spelling of 507688399 in words is "five hundred seven million, six hundred eighty-eight thousand, three hundred ninety-nine".