138960299 has 4 divisors (see below), whose sum is σ = 139023864. Its totient is φ = 138896736.

The previous prime is 138960253. The next prime is 138960323. The reversal of 138960299 is 992069831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992069831 = 1621 ⋅612011.

It is a cyclic number.

It is not a de Polignac number, because 138960299 - 2¹² = 138956203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138960209) 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 in 3 ways as a sum of consecutive naturals, for example, 28382 + ... + 32915.

It is an arithmetic number, because the mean of its divisors is an integer number (34755966).

Almost surely, 2^138960299 is an apocalyptic number.

138960299 is a deficient number, since it is larger than the sum of its proper divisors (63565).

138960299 is an equidigital number, since it uses as much as digits as its factorization.

138960299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63564.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 138960299 is about 11788.1423048757. The cubic root of 138960299 is about 517.9608242462.

The spelling of 138960299 in words is "one hundred thirty-eight million, nine hundred sixty thousand, two hundred ninety-nine".