3838406990 has 32 divisors (see below), whose sum is σ = 7549784064. Its totient is φ = 1393460640.

The previous prime is 3838406947. The next prime is 3838407007. The reversal of 3838406990 is 996048383.

3838406990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38027 + ... + 95513.

It is an arithmetic number, because the mean of its divisors is an integer number (235930752).

Almost surely, 2^3838406990 is an apocalyptic number.

3838406990 is a deficient number, since it is larger than the sum of its proper divisors (3711377074).

3838406990 is a wasteful number, since it uses less digits than its factorization.

3838406990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58112.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 3838406990 is about 61954.8786618132. The cubic root of 3838406990 is about 1565.7304840410.

The spelling of 3838406990 in words is "three billion, eight hundred thirty-eight million, four hundred six thousand, nine hundred ninety".