138879003 has 8 divisors (see below), whose sum is σ = 187403328. Its totient is φ = 91470344.

The previous prime is 138878983. The next prime is 138879017. The reversal of 138879003 is 300978831.

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 138879003 - 2²⁴ = 122101787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138879023) 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, 278625 + ... + 279122.

It is an arithmetic number, because the mean of its divisors is an integer number (23425416).

Almost surely, 2^138879003 is an apocalyptic number.

138879003 is a deficient number, since it is larger than the sum of its proper divisors (48524325).

138879003 is an equidigital number, since it uses as much as digits as its factorization.

138879003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557833.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 138879003 is about 11784.6935895678. The cubic root of 138879003 is about 517.8597969320.

The spelling of 138879003 in words is "one hundred thirty-eight million, eight hundred seventy-nine thousand, three".