138769073 has 8 divisors (see below), whose sum is σ = 140743680. Its totient is φ = 136805760.

The previous prime is 138769069. The next prime is 138769087. The reversal of 138769073 is 370967831.

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

It is a cyclic number.

It is not a de Polignac number, because 138769073 - 2² = 138769069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138769013) 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, 23648 + ... + 28926.

It is an arithmetic number, because the mean of its divisors is an integer number (17592960).

Almost surely, 2^138769073 is an apocalyptic number.

It is an amenable number.

138769073 is a deficient number, since it is larger than the sum of its proper divisors (1974607).

138769073 is an equidigital number, since it uses as much as digits as its factorization.

138769073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 138769073 is about 11780.0285653304. The cubic root of 138769073 is about 517.7231231526.

The spelling of 138769073 in words is "one hundred thirty-eight million, seven hundred sixty-nine thousand, seventy-three".