653979241 has 2 divisors, whose sum is σ = 653979242. Its totient is φ = 653979240.

The previous prime is 653979191. The next prime is 653979269. The reversal of 653979241 is 142979356.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555969241 + 98010000 = 23579^2 + 9900^2 .

It is a cyclic number.

It is not a de Polignac number, because 653979241 - 2¹³ = 653971049 is a prime.

It is equal to p_33989590 and since 653979241 and 33989590 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 653979191 and 653979200.

It is a weakly prime.

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 as a sum of consecutive naturals, namely, 326989620 + 326989621.

It is an arithmetic number, because the mean of its divisors is an integer number (326989621).

Almost surely, 2^653979241 is an apocalyptic number.

It is an amenable number.

653979241 is a deficient number, since it is larger than the sum of its proper divisors (1).

653979241 is an equidigital number, since it uses as much as digits as its factorization.

653979241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 653979241 is about 25573.0178313002. The cubic root of 653979241 is about 868.0031894274.

The spelling of 653979241 in words is "six hundred fifty-three million, nine hundred seventy-nine thousand, two hundred forty-one".