3489609057491 has 4 divisors (see below), whose sum is σ = 3489652857432. Its totient is φ = 3489565257552.

The previous prime is 3489609057449. The next prime is 3489609057499. The reversal of 3489609057491 is 1947509069843.

3489609057491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3489609057491 - 2³⁰ = 3488535315667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3489609057499) 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, 21780245 + ... + 21939878.

It is an arithmetic number, because the mean of its divisors is an integer number (872413214358).

Almost surely, 2^{3489609057491} is an apocalyptic number.

3489609057491 is a deficient number, since it is larger than the sum of its proper divisors (43799941).

3489609057491 is an equidigital number, since it uses as much as digits as its factorization.

3489609057491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43799940.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 3489609057491 in words is "three trillion, four hundred eighty-nine billion, six hundred nine million, fifty-seven thousand, four hundred ninety-one".