349625354069 has 4 divisors (see below), whose sum is σ = 353086991340. Its totient is φ = 346163716800.

The previous prime is 349625354051. The next prime is 349625354107. The reversal of 349625354069 is 960453526943.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960453526943 = 173 ⋅5551754491.

It can be written as a sum of positive squares in 2 ways, for example, as 286894140625 + 62731213444 = 535625^2 + 250462^2 .

It is a cyclic number.

It is not a de Polignac number, because 349625354069 - 2¹⁶ = 349625288533 is a prime.

It is a super-2 number, since 2×349625354069² (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 (349625351069) 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, 1730818484 + ... + 1730818685.

It is an arithmetic number, because the mean of its divisors is an integer number (88271747835).

Almost surely, 2^349625354069 is an apocalyptic number.

It is an amenable number.

349625354069 is a deficient number, since it is larger than the sum of its proper divisors (3461637271).

349625354069 is a wasteful number, since it uses less digits than its factorization.

349625354069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461637270.

The product of its (nonzero) digits is 20995200, while the sum is 56.

The spelling of 349625354069 in words is "three hundred forty-nine billion, six hundred twenty-five million, three hundred fifty-four thousand, sixty-nine".