523938890 has 16 divisors (see below), whose sum is σ = 948303720. Its totient is φ = 208416960.

The previous prime is 523938847. The next prime is 523938893. The reversal of 523938890 is 98839325.

It can be written as a sum of positive squares in 4 ways, for example, as 436684609 + 87254281 = 20897^2 + 9341^2 .

It is not an unprimeable number, because it can be changed into a prime (523938893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142925 + ... + 146544.

Almost surely, 2^523938890 is an apocalyptic number.

523938890 is a deficient number, since it is larger than the sum of its proper divisors (424364830).

523938890 is a wasteful number, since it uses less digits than its factorization.

523938890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289657.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 523938890 is about 22889.7114442275. The cubic root of 523938890 is about 806.1704563474.

The spelling of 523938890 in words is "five hundred twenty-three million, nine hundred thirty-eight thousand, eight hundred ninety".