138432467 has 4 divisors (see below), whose sum is σ = 140778840. Its totient is φ = 136086096.

The previous prime is 138432451. The next prime is 138432487. The reversal of 138432467 is 764234831.

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

It is not a de Polignac number, because 138432467 - 2⁴ = 138432451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138432467.

It is not an unprimeable number, because it can be changed into a prime (138432487) 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, 1173098 + ... + 1173215.

It is an arithmetic number, because the mean of its divisors is an integer number (35194710).

Almost surely, 2^138432467 is an apocalyptic number.

138432467 is a deficient number, since it is larger than the sum of its proper divisors (2346373).

138432467 is an equidigital number, since it uses as much as digits as its factorization.

138432467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346372.

The product of its digits is 96768, while the sum is 38.

The square root of 138432467 is about 11765.7327438626. The cubic root of 138432467 is about 517.3041782073.

The spelling of 138432467 in words is "one hundred thirty-eight million, four hundred thirty-two thousand, four hundred sixty-seven".