470138523 has 4 divisors (see below), whose sum is σ = 626851368. Its totient is φ = 313425680.

The previous prime is 470138497. The next prime is 470138569. The reversal of 470138523 is 325831074.

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

It is a cyclic number.

It is not a de Polignac number, because 470138523 - 2¹⁶ = 470072987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (470138593) 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, 78356418 + ... + 78356423.

It is an arithmetic number, because the mean of its divisors is an integer number (156712842).

Almost surely, 2^470138523 is an apocalyptic number.

470138523 is a deficient number, since it is larger than the sum of its proper divisors (156712845).

470138523 is a wasteful number, since it uses less digits than its factorization.

470138523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156712844.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 470138523 is about 21682.6779480764. The cubic root of 470138523 is about 777.5743861723.

Adding to 470138523 its reverse (325831074), we get a palindrome (795969597).

The spelling of 470138523 in words is "four hundred seventy million, one hundred thirty-eight thousand, five hundred twenty-three".