138307463 has 4 divisors (see below), whose sum is σ = 158065680. Its totient is φ = 118549248.

The previous prime is 138307459. The next prime is 138307483. The reversal of 138307463 is 364703831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138307463 - 2² = 138307459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138307453) 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, 9879098 + ... + 9879111.

It is an arithmetic number, because the mean of its divisors is an integer number (39516420).

Almost surely, 2^138307463 is an apocalyptic number.

138307463 is a deficient number, since it is larger than the sum of its proper divisors (19758217).

138307463 is an equidigital number, since it uses as much as digits as its factorization.

138307463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19758216.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 138307463 is about 11760.4193377617. The cubic root of 138307463 is about 517.1484234031.

The spelling of 138307463 in words is "one hundred thirty-eight million, three hundred seven thousand, four hundred sixty-three".