138911041 has 4 divisors (see below), whose sum is σ = 140584752. Its totient is φ = 137237332.

The previous prime is 138911021. The next prime is 138911083. The reversal of 138911041 is 140119831.

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.

It is a cyclic number.

It is not a de Polignac number, because 138911041 - 2¹⁷ = 138779969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138911021) 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, 836731 + ... + 836896.

It is an arithmetic number, because the mean of its divisors is an integer number (35146188).

Almost surely, 2^138911041 is an apocalyptic number.

It is an amenable number.

138911041 is a deficient number, since it is larger than the sum of its proper divisors (1673711).

138911041 is an equidigital number, since it uses as much as digits as its factorization.

138911041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673710.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 138911041 is about 11786.0528167831. The cubic root of 138911041 is about 517.8996155659.

The spelling of 138911041 in words is "one hundred thirty-eight million, nine hundred eleven thousand, forty-one".