138094877 has 2 divisors, whose sum is σ = 138094878. Its totient is φ = 138094876.

The previous prime is 138094871. The next prime is 138094919. The reversal of 138094877 is 778490831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99580441 + 38514436 = 9979^2 + 6206^2 .

It is a cyclic number.

It is not a de Polignac number, because 138094877 - 2⁶ = 138094813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138094871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69047438 + 69047439.

It is an arithmetic number, because the mean of its divisors is an integer number (69047439).

Almost surely, 2^138094877 is an apocalyptic number.

It is an amenable number.

138094877 is a deficient number, since it is larger than the sum of its proper divisors (1).

138094877 is an equidigital number, since it uses as much as digits as its factorization.

138094877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 138094877 is about 11751.3776639167. The cubic root of 138094877 is about 516.8833258983.

The spelling of 138094877 in words is "one hundred thirty-eight million, ninety-four thousand, eight hundred seventy-seven".