3398993947 has 4 divisors (see below), whose sum is σ = 3417982920. Its totient is φ = 3380004976.

The previous prime is 3398993909. The next prime is 3398993963. The reversal of 3398993947 is 7493998933.

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 3398993947 - 2¹¹ = 3398991899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3398903947) 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, 9494218 + ... + 9494575.

It is an arithmetic number, because the mean of its divisors is an integer number (854495730).

Almost surely, 2^3398993947 is an apocalyptic number.

3398993947 is a deficient number, since it is larger than the sum of its proper divisors (18988973).

3398993947 is a wasteful number, since it uses less digits than its factorization.

3398993947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18988972.

The product of its digits is 39680928, while the sum is 64.

The square root of 3398993947 is about 58300.8914768891. The cubic root of 3398993947 is about 1503.5462681956.

The spelling of 3398993947 in words is "three billion, three hundred ninety-eight million, nine hundred ninety-three thousand, nine hundred forty-seven".