9550890397 has 2 divisors, whose sum is σ = 9550890398. Its totient is φ = 9550890396.

The previous prime is 9550890337. The next prime is 9550890403. The reversal of 9550890397 is 7930980559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7767601956 + 1783288441 = 88134^2 + 42229^2 .

It is an emirp because it is prime and its reverse (7930980559) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9550890397 - 2⁷ = 9550890269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9550890337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4775445198 + 4775445199.

It is an arithmetic number, because the mean of its divisors is an integer number (4775445199).

Almost surely, 2^9550890397 is an apocalyptic number.

It is an amenable number.

9550890397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9550890397 is an equidigital number, since it uses as much as digits as its factorization.

9550890397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The square root of 9550890397 is about 97728.6569896466. The cubic root of 9550890397 is about 2121.6868617838.

The spelling of 9550890397 in words is "nine billion, five hundred fifty million, eight hundred ninety thousand, three hundred ninety-seven".