3938436087 has 16 divisors (see below), whose sum is σ = 5561445600. Its totient is φ = 2470597632.

The previous prime is 3938436083. The next prime is 3938436113. The reversal of 3938436087 is 7806348393.

It is not a de Polignac number, because 3938436087 - 2² = 3938436083 is a prime.

It is a super-2 number, since 2×3938436087² = 31022557622767743138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938436083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348843 + ... + 359955.

It is an arithmetic number, because the mean of its divisors is an integer number (347590350).

Almost surely, 2^3938436087 is an apocalyptic number.

3938436087 is a deficient number, since it is larger than the sum of its proper divisors (1623009513).

3938436087 is a wasteful number, since it uses less digits than its factorization.

3938436087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 3938436087 is about 62756.9604665490. The cubic root of 3938436087 is about 1579.2150252049.

The spelling of 3938436087 in words is "three billion, nine hundred thirty-eight million, four hundred thirty-six thousand, eighty-seven".