138946093 has 8 divisors (see below), whose sum is σ = 163237536. Its totient is φ = 116598000.

The previous prime is 138946091. The next prime is 138946103. The reversal of 138946093 is 390649831.

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 138946093 - 2¹ = 138946091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138946091) 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, 485683 + ... + 485968.

It is an arithmetic number, because the mean of its divisors is an integer number (20404692).

Almost surely, 2^138946093 is an apocalyptic number.

138946093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138946093 is a deficient number, since it is larger than the sum of its proper divisors (24291443).

138946093 is a wasteful number, since it uses less digits than its factorization.

138946093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971675.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 138946093 is about 11787.5397348217. The cubic root of 138946093 is about 517.9431731562.

The spelling of 138946093 in words is "one hundred thirty-eight million, nine hundred forty-six thousand, ninety-three".