138927364 has 6 divisors (see below), whose sum is σ = 243122894. Its totient is φ = 69463680.

The previous prime is 138927361. The next prime is 138927379. The reversal of 138927364 is 463729831.

It can be written as a sum of positive squares in only one way, i.e., 121220100 + 17707264 = 11010^2 + 4208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138927364.

It is not an unprimeable number, because it can be changed into a prime (138927361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17365917 + ... + 17365924.

Almost surely, 2^138927364 is an apocalyptic number.

It is an amenable number.

138927364 is a deficient number, since it is larger than the sum of its proper divisors (104195530).

138927364 is a wasteful number, since it uses less digits than its factorization.

138927364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34731845 (or 34731843 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 138927364 is about 11786.7452674604. The cubic root of 138927364 is about 517.9199003569.

The spelling of 138927364 in words is "one hundred thirty-eight million, nine hundred twenty-seven thousand, three hundred sixty-four".