505427397 has 8 divisors (see below), whose sum is σ = 674007456. Its totient is φ = 336899472.

The previous prime is 505427389. The next prime is 505427407. The reversal of 505427397 is 793724505.

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

It is not a de Polignac number, because 505427397 - 2³ = 505427389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505427347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28503 + ... + 42699.

It is an arithmetic number, because the mean of its divisors is an integer number (84250932).

Almost surely, 2^505427397 is an apocalyptic number.

It is an amenable number.

505427397 is a deficient number, since it is larger than the sum of its proper divisors (168580059).

505427397 is a wasteful number, since it uses less digits than its factorization.

505427397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26067.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 505427397 is about 22481.7125014977. The cubic root of 505427397 is about 796.5620157660.

The spelling of 505427397 in words is "five hundred five million, four hundred twenty-seven thousand, three hundred ninety-seven".