524638969 has 2 divisors, whose sum is σ = 524638970. Its totient is φ = 524638968.

The previous prime is 524638967. The next prime is 524639107. The reversal of 524638969 is 969836425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442555369 + 82083600 = 21037^2 + 9060^2 .

It is a cyclic number.

It is not a de Polignac number, because 524638969 - 2¹ = 524638967 is a prime.

It is a super-2 number, since 2×524638969² = 550492095586765922, which contains 22 as substring.

Together with 524638967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (524638967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262319484 + 262319485.

It is an arithmetic number, because the mean of its divisors is an integer number (262319485).

Almost surely, 2^524638969 is an apocalyptic number.

It is an amenable number.

524638969 is a deficient number, since it is larger than the sum of its proper divisors (1).

524638969 is an equidigital number, since it uses as much as digits as its factorization.

524638969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The square root of 524638969 is about 22904.9987775595. The cubic root of 524638969 is about 806.5293606846.

The spelling of 524638969 in words is "five hundred twenty-four million, six hundred thirty-eight thousand, nine hundred sixty-nine".