523091349 has 18 divisors (see below), whose sum is σ = 830511318. Its totient is φ = 317024400.

The previous prime is 523091347. The next prime is 523091383. The reversal of 523091349 is 943190325.

It is a happy number.

523091349 is a `hidden beast` number, since 5 + 2 + 309 + 1 + 349 = 666.

It can be written as a sum of positive squares in only one way, i.e., 405216900 + 117874449 = 20130^2 + 10857^2 .

It is not a de Polignac number, because 523091349 - 2¹ = 523091347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523091347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 239082 + ... + 241259.

Almost surely, 2^523091349 is an apocalyptic number.

It is an amenable number.

523091349 is a deficient number, since it is larger than the sum of its proper divisors (307419969).

523091349 is a wasteful number, since it uses less digits than its factorization.

523091349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480369 (or 480355 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 523091349 is about 22871.1903712946. The cubic root of 523091349 is about 805.7355256828.

The spelling of 523091349 in words is "five hundred twenty-three million, ninety-one thousand, three hundred forty-nine".