353889997 has 2 divisors, whose sum is σ = 353889998. Its totient is φ = 353889996.

The previous prime is 353889923. The next prime is 353890001. The reversal of 353889997 is 799988353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214153956 + 139736041 = 14634^2 + 11821^2 .

It is a cyclic number.

It is not a de Polignac number, because 353889997 - 2⁷ = 353889869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353889197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176944998 + 176944999.

It is an arithmetic number, because the mean of its divisors is an integer number (176944999).

Almost surely, 2^353889997 is an apocalyptic number.

It is an amenable number.

353889997 is a deficient number, since it is larger than the sum of its proper divisors (1).

353889997 is an equidigital number, since it uses as much as digits as its factorization.

353889997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 61.

The square root of 353889997 is about 18811.9641983499. The cubic root of 353889997 is about 707.3311142794.

The spelling of 353889997 in words is "three hundred fifty-three million, eight hundred eighty-nine thousand, nine hundred ninety-seven".