505897394 has 4 divisors (see below), whose sum is σ = 758846094. Its totient is φ = 252948696.

The previous prime is 505897393. The next prime is 505897429. The reversal of 505897394 is 493798505.

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

It can be written as a sum of positive squares in only one way, i.e., 504586369 + 1311025 = 22463^2 + 1145^2 .

It is not an unprimeable number, because it can be changed into a prime (505897393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126474347 + ... + 126474350.

Almost surely, 2^505897394 is an apocalyptic number.

505897394 is a deficient number, since it is larger than the sum of its proper divisors (252948700).

505897394 is a wasteful number, since it uses less digits than its factorization.

505897394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252948699.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 505897394 is about 22492.1629462353. The cubic root of 505897394 is about 796.8088469785.

The spelling of 505897394 in words is "five hundred five million, eight hundred ninety-seven thousand, three hundred ninety-four".