3398436905782 has 4 divisors (see below), whose sum is σ = 5097655358676. Its totient is φ = 1699218452890.

The previous prime is 3398436905749. The next prime is 3398436905783. The reversal of 3398436905782 is 2875096348933.

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

It is a super-2 number, since 2×3398436905782² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3398436905783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849609226444 + ... + 849609226447.

It is an arithmetic number, because the mean of its divisors is an integer number (1274413839669).

Almost surely, 2^{3398436905782} is an apocalyptic number.

3398436905782 is a deficient number, since it is larger than the sum of its proper divisors (1699218452894).

3398436905782 is a wasteful number, since it uses less digits than its factorization.

3398436905782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699218452893.

The product of its (nonzero) digits is 235146240, while the sum is 67.

The spelling of 3398436905782 in words is "three trillion, three hundred ninety-eight billion, four hundred thirty-six million, nine hundred five thousand, seven hundred eighty-two".