355433403989 has 2 divisors, whose sum is σ = 355433403990. Its totient is φ = 355433403988.

The previous prime is 355433403943. The next prime is 355433404013. The reversal of 355433403989 is 989304334553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254477873764 + 100955530225 = 504458^2 + 317735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355433403989 is a prime.

It is a super-2 number, since 2×355433403989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355433403929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177716701994 + 177716701995.

It is an arithmetic number, because the mean of its divisors is an integer number (177716701995).

Almost surely, 2^355433403989 is an apocalyptic number.

It is an amenable number.

355433403989 is a deficient number, since it is larger than the sum of its proper divisors (1).

355433403989 is an equidigital number, since it uses as much as digits as its factorization.

355433403989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 56.

The spelling of 355433403989 in words is "three hundred fifty-five billion, four hundred thirty-three million, four hundred three thousand, nine hundred eighty-nine".