3467128789 has 4 divisors (see below), whose sum is σ = 3498937420. Its totient is φ = 3435320160.

The previous prime is 3467128787. The next prime is 3467128793. The reversal of 3467128789 is 9878217643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9878217643 = 7 ⋅1411173949.

It can be written as a sum of positive squares in 2 ways, for example, as 1619418564 + 1847710225 = 40242^2 + 42985^2 .

It is a cyclic number.

It is not a de Polignac number, because 3467128789 - 2¹ = 3467128787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3467128781) 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, 15904152 + ... + 15904369.

It is an arithmetic number, because the mean of its divisors is an integer number (874734355).

Almost surely, 2^3467128789 is an apocalyptic number.

It is an amenable number.

3467128789 is a deficient number, since it is larger than the sum of its proper divisors (31808631).

3467128789 is a wasteful number, since it uses less digits than its factorization.

3467128789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31808630.

The product of its digits is 4064256, while the sum is 55.

The square root of 3467128789 is about 58882.3300235308. The cubic root of 3467128789 is about 1513.5263677584.

The spelling of 3467128789 in words is "three billion, four hundred sixty-seven million, one hundred twenty-eight thousand, seven hundred eighty-nine".