523087389 has 112 divisors (see below), whose sum is σ = 921057984. Its totient is φ = 293932800.

The previous prime is 523087387. The next prime is 523087391. The reversal of 523087389 is 983780325.

It is an interprime number because it is at equal distance from previous prime (523087387) and next prime (523087391).

It is not a de Polignac number, because 523087389 - 2¹ = 523087387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523087381) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 12164802 + ... + 12164844.

It is an arithmetic number, because the mean of its divisors is an integer number (8223732).

Almost surely, 2^523087389 is an apocalyptic number.

It is an amenable number.

523087389 is a deficient number, since it is larger than the sum of its proper divisors (397970595).

523087389 is a wasteful number, since it uses less digits than its factorization.

523087389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 523087389 is about 22871.1037993360. The cubic root of 523087389 is about 805.7334924365.

The spelling of 523087389 in words is "five hundred twenty-three million, eighty-seven thousand, three hundred eighty-nine".