3900138900 has 72 divisors (see below), whose sum is σ = 12896466240. Its totient is φ = 891459840.

The previous prime is 3900138887. The next prime is 3900138917. The reversal of 3900138900 is 98310093.

It is a super-2 number, since 2×3900138900² = 30422166878586420000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 926505 + ... + 930704.

Almost surely, 2^3900138900 is an apocalyptic number.

3900138900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3900138900 is an abundant number, since it is smaller than the sum of its proper divisors (8996327340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3900138900 is a wasteful number, since it uses less digits than its factorization.

3900138900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857233 (or 1857226 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 3900138900 is about 62451.0920641105. The cubic root of 3900138900 is about 1574.0796033379.

Adding to 3900138900 its reverse (98310093), we get a palindrome (3998448993).

The spelling of 3900138900 in words is "three billion, nine hundred million, one hundred thirty-eight thousand, nine hundred".