3398436905749 has 2 divisors, whose sum is σ = 3398436905750. Its totient is φ = 3398436905748.

The previous prime is 3398436905741. The next prime is 3398436905783. The reversal of 3398436905749 is 9475096348933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067217079524 + 1331219826225 = 1437782^2 + 1153785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3398436905749 - 2³ = 3398436905741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3398436905741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1699218452874 + 1699218452875.

It is an arithmetic number, because the mean of its divisors is an integer number (1699218452875).

Almost surely, 2^{3398436905749} is an apocalyptic number.

It is an amenable number.

3398436905749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3398436905749 is an equidigital number, since it uses as much as digits as its factorization.

3398436905749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529079040, while the sum is 70.

The spelling of 3398436905749 in words is "three trillion, three hundred ninety-eight billion, four hundred thirty-six million, nine hundred five thousand, seven hundred forty-nine".