652399469 has 2 divisors, whose sum is σ = 652399470. Its totient is φ = 652399468.

The previous prime is 652399337. The next prime is 652399471. The reversal of 652399469 is 964993256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570732100 + 81667369 = 23890^2 + 9037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652399469 is a prime.

It is a super-2 number, since 2×652399469² = 851250134302963922, which contains 22 as substring.

Together with 652399471, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 652399469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652399499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326199734 + 326199735.

It is an arithmetic number, because the mean of its divisors is an integer number (326199735).

Almost surely, 2^652399469 is an apocalyptic number.

It is an amenable number.

652399469 is a deficient number, since it is larger than the sum of its proper divisors (1).

652399469 is an equidigital number, since it uses as much as digits as its factorization.

652399469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 53.

The square root of 652399469 is about 25542.1116785594. Note that the first 3 decimals coincide. The cubic root of 652399469 is about 867.3037009856.

The spelling of 652399469 in words is "six hundred fifty-two million, three hundred ninety-nine thousand, four hundred sixty-nine".