652411989 has 28 divisors (see below), whose sum is σ = 983450796. Its totient is φ = 432594432.

The previous prime is 652411973. The next prime is 652411999. The reversal of 652411989 is 989114256.

652411989 is a `hidden beast` number, since 6 + 524 + 119 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 161036100 + 491375889 = 12690^2 + 22167^2 .

It is not a de Polignac number, because 652411989 - 2⁴ = 652411973 is a prime.

It is a super-2 number, since 2×652411989² = 851282806781872242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652411939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 138379 + ... + 143015.

Almost surely, 2^652411989 is an apocalyptic number.

It is an amenable number.

652411989 is a deficient number, since it is larger than the sum of its proper divisors (331038807).

652411989 is an equidigital number, since it uses as much as digits as its factorization.

652411989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 4833 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 652411989 is about 25542.3567628361. The cubic root of 652411989 is about 867.3092490041.

The spelling of 652411989 in words is "six hundred fifty-two million, four hundred eleven thousand, nine hundred eighty-nine".