3456629891 has 16 divisors (see below), whose sum is σ = 4274672640. Its totient is φ = 2747999520.

The previous prime is 3456629881. The next prime is 3456629903. The reversal of 3456629891 is 1989266543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3456629891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3456629831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633395 + ... + 638828.

It is an arithmetic number, because the mean of its divisors is an integer number (267167040).

Almost surely, 2^3456629891 is an apocalyptic number.

3456629891 is a deficient number, since it is larger than the sum of its proper divisors (818042749).

3456629891 is a wasteful number, since it uses less digits than its factorization.

3456629891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272266.

The product of its digits is 2799360, while the sum is 53.

The square root of 3456629891 is about 58793.1109144600. The cubic root of 3456629891 is about 1511.9971076424.

It can be divided in two parts, 345662 and 9891, that added together give a palindrome (355553).

The spelling of 3456629891 in words is "three billion, four hundred fifty-six million, six hundred twenty-nine thousand, eight hundred ninety-one".