3402738891 has 6 divisors (see below), whose sum is σ = 4915067300. Its totient is φ = 2268492588.

The previous prime is 3402738863. The next prime is 3402738893. The reversal of 3402738891 is 1988372043.

It is not a de Polignac number, because 3402738891 - 2¹⁹ = 3402214603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3402738893) 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 5 ways as a sum of consecutive naturals, for example, 189041041 + ... + 189041058.

Almost surely, 2^3402738891 is an apocalyptic number.

3402738891 is a deficient number, since it is larger than the sum of its proper divisors (1512328409).

3402738891 is a wasteful number, since it uses less digits than its factorization.

3402738891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378082105 (or 378082102 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 3402738891 is about 58333.0000171430. Note that the first 4 decimals coincide. The cubic root of 3402738891 is about 1504.0982579901.

The spelling of 3402738891 in words is "three billion, four hundred two million, seven hundred thirty-eight thousand, eight hundred ninety-one".