523990478 has 8 divisors (see below), whose sum is σ = 857439000. Its totient is φ = 238177480.

The previous prime is 523990471. The next prime is 523990499. The reversal of 523990478 is 874099325.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523990471) 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, 11908853 + ... + 11908896.

It is an arithmetic number, because the mean of its divisors is an integer number (107179875).

Almost surely, 2^523990478 is an apocalyptic number.

523990478 is a deficient number, since it is larger than the sum of its proper divisors (333448522).

523990478 is a wasteful number, since it uses less digits than its factorization.

523990478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23817762.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 523990478 is about 22890.8382983236. The cubic root of 523990478 is about 806.1969144945.

The spelling of 523990478 in words is "five hundred twenty-three million, nine hundred ninety thousand, four hundred seventy-eight".