955699621 has 2 divisors, whose sum is σ = 955699622. Its totient is φ = 955699620.

The previous prime is 955699609. The next prime is 955699637. The reversal of 955699621 is 126996559.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556299396 + 399400225 = 23586^2 + 19985^2 .

It is a cyclic number.

It is not a de Polignac number, because 955699621 - 2²⁷ = 821481893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (955699681) 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, 477849810 + 477849811.

It is an arithmetic number, because the mean of its divisors is an integer number (477849811).

Almost surely, 2^955699621 is an apocalyptic number.

It is an amenable number.

955699621 is a deficient number, since it is larger than the sum of its proper divisors (1).

955699621 is an equidigital number, since it uses as much as digits as its factorization.

955699621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 52.

The square root of 955699621 is about 30914.3918102880. The cubic root of 955699621 is about 985.0096182936.

The spelling of 955699621 in words is "nine hundred fifty-five million, six hundred ninety-nine thousand, six hundred twenty-one".