3492696721 has 4 divisors (see below), whose sum is σ = 3492979200. Its totient is φ = 3492414244.

The previous prime is 3492696709. The next prime is 3492696737. The reversal of 3492696721 is 1276962943.

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 not a de Polignac number, because 3492696721 - 2⁷ = 3492696593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3492696791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121801 + ... + 147718.

It is an arithmetic number, because the mean of its divisors is an integer number (873244800).

Almost surely, 2^3492696721 is an apocalyptic number.

It is an amenable number.

3492696721 is a deficient number, since it is larger than the sum of its proper divisors (282479).

3492696721 is a wasteful number, since it uses less digits than its factorization.

3492696721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282478.

The product of its digits is 979776, while the sum is 49.

The square root of 3492696721 is about 59099.0416250551. The cubic root of 3492696721 is about 1517.2377002408.

The spelling of 3492696721 in words is "three billion, four hundred ninety-two million, six hundred ninety-six thousand, seven hundred twenty-one".