3888738409 has 4 divisors (see below), whose sum is σ = 4057814016. Its totient is φ = 3719662804.

The previous prime is 3888738407. The next prime is 3888738431. The reversal of 3888738409 is 9048378883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9048378883 = 49537 ⋅182659.

It is a cyclic number.

It is not a de Polignac number, because 3888738409 - 2¹ = 3888738407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3888738407) 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, 84537769 + ... + 84537814.

It is an arithmetic number, because the mean of its divisors is an integer number (1014453504).

Almost surely, 2^3888738409 is an apocalyptic number.

It is an amenable number.

3888738409 is a deficient number, since it is larger than the sum of its proper divisors (169075607).

3888738409 is a wasteful number, since it uses less digits than its factorization.

3888738409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169075606.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The square root of 3888738409 is about 62359.7499113010. The cubic root of 3888738409 is about 1572.5443764706.

The spelling of 3888738409 in words is "three billion, eight hundred eighty-eight million, seven hundred thirty-eight thousand, four hundred nine".