505427399 has 8 divisors (see below), whose sum is σ = 530020560. Its totient is φ = 481311936.

The previous prime is 505427389. The next prime is 505427407. The reversal of 505427399 is 993724505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505427399 - 2⁴ = 505427383 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 (505427339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117257 + ... + 121490.

It is an arithmetic number, because the mean of its divisors is an integer number (66252570).

Almost surely, 2^505427399 is an apocalyptic number.

505427399 is a deficient number, since it is larger than the sum of its proper divisors (24593161).

505427399 is a wasteful number, since it uses less digits than its factorization.

505427399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238849.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 505427399 is about 22481.7125459783. The cubic root of 505427399 is about 796.5620168166.

The spelling of 505427399 in words is "five hundred five million, four hundred twenty-seven thousand, three hundred ninety-nine".