3491812289 has 4 divisors (see below), whose sum is σ = 3990642624. Its totient is φ = 2992981956.

The previous prime is 3491812279. The next prime is 3491812307. The reversal of 3491812289 is 9822181943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3491812289 is a prime.

It is a super-2 number, since 2×3491812289² = 24385506123222839042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3491812279) 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, 249415157 + ... + 249415170.

It is an arithmetic number, because the mean of its divisors is an integer number (997660656).

Almost surely, 2^3491812289 is an apocalyptic number.

It is an amenable number.

3491812289 is a deficient number, since it is larger than the sum of its proper divisors (498830335).

3491812289 is an equidigital number, since it uses as much as digits as its factorization.

3491812289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498830334.

The product of its digits is 248832, while the sum is 47.

The square root of 3491812289 is about 59091.5585257319. The cubic root of 3491812289 is about 1517.1096228112.

The spelling of 3491812289 in words is "three billion, four hundred ninety-one million, eight hundred twelve thousand, two hundred eighty-nine".