3938150129 has 4 divisors (see below), whose sum is σ = 3938277876. Its totient is φ = 3938022384.

The previous prime is 3938150071. The next prime is 3938150173. The reversal of 3938150129 is 9210518393.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9210518393 = 7867 ⋅1170779.

It can be written as a sum of positive squares in 2 ways, for example, as 355888225 + 3582261904 = 18865^2 + 59852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3938150129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938150329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14087 + ... + 89859.

It is an arithmetic number, because the mean of its divisors is an integer number (984569469).

Almost surely, 2^3938150129 is an apocalyptic number.

It is an amenable number.

3938150129 is a deficient number, since it is larger than the sum of its proper divisors (127747).

3938150129 is an equidigital number, since it uses as much as digits as its factorization.

3938150129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127746.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 3938150129 is about 62754.6821281090. The cubic root of 3938150129 is about 1579.1768035953.

The spelling of 3938150129 in words is "three billion, nine hundred thirty-eight million, one hundred fifty thousand, one hundred twenty-nine".