138456463 has 8 divisors (see below), whose sum is σ = 139841408. Its totient is φ = 137078784.

The previous prime is 138456457. The next prime is 138456491. The reversal of 138456463 is 364654831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138456463 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 (138456403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41431 + ... + 44647.

It is an arithmetic number, because the mean of its divisors is an integer number (17480176).

Almost surely, 2^138456463 is an apocalyptic number.

138456463 is a deficient number, since it is larger than the sum of its proper divisors (1384945).

138456463 is a wasteful number, since it uses less digits than its factorization.

138456463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its digits is 207360, while the sum is 40.

The square root of 138456463 is about 11766.7524406694. The cubic root of 138456463 is about 517.3340664605.

The spelling of 138456463 in words is "one hundred thirty-eight million, four hundred fifty-six thousand, four hundred sixty-three".