9955619461 has 2 divisors, whose sum is σ = 9955619462. Its totient is φ = 9955619460.

The previous prime is 9955619459. The next prime is 9955619491. The reversal of 9955619461 is 1649165599.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9588130561 + 367488900 = 97919^2 + 19170^2 .

It is a cyclic number.

It is not a de Polignac number, because 9955619461 - 2¹ = 9955619459 is a prime.

It is a super-2 number, since 2×9955619461² (a number of 21 digits) contains 22 as substring.

Together with 9955619459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9955619491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977809730 + 4977809731.

It is an arithmetic number, because the mean of its divisors is an integer number (4977809731).

Almost surely, 2^9955619461 is an apocalyptic number.

It is an amenable number.

9955619461 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955619461 is an equidigital number, since it uses as much as digits as its factorization.

9955619461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2624400, while the sum is 55.

The square root of 9955619461 is about 99777.8505531162. The cubic root of 9955619461 is about 2151.2427976750.

The spelling of 9955619461 in words is "nine billion, nine hundred fifty-five million, six hundred nineteen thousand, four hundred sixty-one".