353420993 has 2 divisors, whose sum is σ = 353420994. Its totient is φ = 353420992.

The previous prime is 353420971. The next prime is 353421017. The reversal of 353420993 is 399024353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190909489 + 162511504 = 13817^2 + 12748^2 .

It is a cyclic number.

It is not a de Polignac number, because 353420993 - 2¹² = 353416897 is a prime.

It is not a weakly prime, because it can be changed into another prime (353420923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176710496 + 176710497.

It is an arithmetic number, because the mean of its divisors is an integer number (176710497).

Almost surely, 2^353420993 is an apocalyptic number.

It is an amenable number.

353420993 is a deficient number, since it is larger than the sum of its proper divisors (1).

353420993 is an equidigital number, since it uses as much as digits as its factorization.

353420993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 38.

The square root of 353420993 is about 18799.4944878845. The cubic root of 353420993 is about 707.0185051043.

The spelling of 353420993 in words is "three hundred fifty-three million, four hundred twenty thousand, nine hundred ninety-three".