523987390 has 8 divisors (see below), whose sum is σ = 943177320. Its totient is φ = 209594952.

The previous prime is 523987361. The next prime is 523987391. The reversal of 523987390 is 93789325.

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

It is a self number, because there is not a number n which added to its sum of digits gives 523987390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523987391) 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, 26199360 + ... + 26199379.

It is an arithmetic number, because the mean of its divisors is an integer number (117897165).

Almost surely, 2^523987390 is an apocalyptic number.

523987390 is a deficient number, since it is larger than the sum of its proper divisors (419189930).

523987390 is a wasteful number, since it uses less digits than its factorization.

523987390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52398746.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 523987390 is about 22890.7708476582. The cubic root of 523987390 is about 806.1953307883.

It can be divided in two parts, 5239 and 87390, that added together give a palindrome (92629).

The spelling of 523987390 in words is "five hundred twenty-three million, nine hundred eighty-seven thousand, three hundred ninety".