353216989 has 8 divisors (see below), whose sum is σ = 355229280. Its totient is φ = 351210000.

The previous prime is 353216971. The next prime is 353217001. The reversal of 353216989 is 989612353.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 353216989 - 2⁷ = 353216861 is a prime.

It is a super-2 number, since 2×353216989² = 249524482636452242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353216959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255079 + ... + 256459.

It is an arithmetic number, because the mean of its divisors is an integer number (44403660).

Almost surely, 2^353216989 is an apocalyptic number.

It is an amenable number.

353216989 is a deficient number, since it is larger than the sum of its proper divisors (2012291).

353216989 is a wasteful number, since it uses less digits than its factorization.

353216989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651.

The product of its digits is 349920, while the sum is 46.

The square root of 353216989 is about 18794.0679204902. The cubic root of 353216989 is about 706.8824422908.

The spelling of 353216989 in words is "three hundred fifty-three million, two hundred sixteen thousand, nine hundred eighty-nine".