138462069 has 4 divisors (see below), whose sum is σ = 184616096. Its totient is φ = 92308044.

The previous prime is 138462053. The next prime is 138462119. The reversal of 138462069 is 960264831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 960264831 = 3 ⋅320088277.

It is not a de Polignac number, because 138462069 - 2⁴ = 138462053 is a prime.

It is a super-2 number, since 2×138462069² = 38343489103521522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138469069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23077009 + ... + 23077014.

It is an arithmetic number, because the mean of its divisors is an integer number (46154024).

Almost surely, 2^138462069 is an apocalyptic number.

It is an amenable number.

138462069 is a deficient number, since it is larger than the sum of its proper divisors (46154027).

138462069 is an equidigital number, since it uses as much as digits as its factorization.

138462069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46154026.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 138462069 is about 11766.9906518192. The cubic root of 138462069 is about 517.3410485245.

The spelling of 138462069 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, sixty-nine".