353494945669 has 4 divisors (see below), whose sum is σ = 353496141900. Its totient is φ = 353493749440.

The previous prime is 353494945637. The next prime is 353494945673. The reversal of 353494945669 is 966549494353.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 966549494353 = 17 ⋅56855852609.

It can be written as a sum of positive squares in 2 ways, for example, as 225398956644 + 128095989025 = 474762^2 + 357905^2 .

It is a cyclic number.

It is not a de Polignac number, because 353494945669 - 2⁵ = 353494945637 is a prime.

It is a super-2 number, since 2×353494945669² (a number of 24 digits) 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 (353494945619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201309 + ... + 864589.

It is an arithmetic number, because the mean of its divisors is an integer number (88374035475).

Almost surely, 2^353494945669 is an apocalyptic number.

It is an amenable number.

353494945669 is a deficient number, since it is larger than the sum of its proper divisors (1196231).

353494945669 is an equidigital number, since it uses as much as digits as its factorization.

353494945669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196230.

The product of its digits is 377913600, while the sum is 67.

The spelling of 353494945669 in words is "three hundred fifty-three billion, four hundred ninety-four million, nine hundred forty-five thousand, six hundred sixty-nine".