3400033781 has 4 divisors (see below), whose sum is σ = 3400586892. Its totient is φ = 3399480672.

The previous prime is 3400033759. The next prime is 3400033807. The reversal of 3400033781 is 1873300043.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2878322500 + 521711281 = 53650^2 + 22841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3400033781 is a prime.

It is a super-2 number, since 2×3400033781² = 23120459423882311922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400033381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267230 + ... + 279663.

It is an arithmetic number, because the mean of its divisors is an integer number (850146723).

Almost surely, 2^3400033781 is an apocalyptic number.

It is an amenable number.

3400033781 is a deficient number, since it is larger than the sum of its proper divisors (553111).

3400033781 is an equidigital number, since it uses as much as digits as its factorization.

3400033781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553110.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3400033781 is about 58309.8086174187. The cubic root of 3400033781 is about 1503.6995762186.

The spelling of 3400033781 in words is "three billion, four hundred million, thirty-three thousand, seven hundred eighty-one".