138960326 has 4 divisors (see below), whose sum is σ = 208440492. Its totient is φ = 69480162.

The previous prime is 138960323. The next prime is 138960337. The reversal of 138960326 is 623069831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623069831 = 19 ⋅32793149.

It is a self number, because there is not a number n which added to its sum of digits gives 138960326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138960323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34740080 + ... + 34740083.

It is an arithmetic number, because the mean of its divisors is an integer number (52110123).

Almost surely, 2^138960326 is an apocalyptic number.

138960326 is a deficient number, since it is larger than the sum of its proper divisors (69480166).

138960326 is an equidigital number, since it uses as much as digits as its factorization.

138960326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69480165.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 138960326 is about 11788.1434500943. The cubic root of 138960326 is about 517.9608577928.

The spelling of 138960326 in words is "one hundred thirty-eight million, nine hundred sixty thousand, three hundred twenty-six".