351409904969 has 4 divisors (see below), whose sum is σ = 351412768644. Its totient is φ = 351407041296.

The previous prime is 351409904903. The next prime is 351409904987. The reversal of 351409904969 is 969409904153.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220392691600 + 131017213369 = 469460^2 + 361963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351409904969 is a prime.

It is a super-2 number, since 2×351409904969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351409904269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239122 + ... + 1496075.

It is an arithmetic number, because the mean of its divisors is an integer number (87853192161).

Almost surely, 2^351409904969 is an apocalyptic number.

It is an amenable number.

351409904969 is a deficient number, since it is larger than the sum of its proper divisors (2863675).

351409904969 is a wasteful number, since it uses less digits than its factorization.

351409904969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863674.

The product of its (nonzero) digits is 9447840, while the sum is 59.

The spelling of 351409904969 in words is "three hundred fifty-one billion, four hundred nine million, nine hundred four thousand, nine hundred sixty-nine".