139877903 has 8 divisors (see below), whose sum is σ = 152789376. Its totient is φ = 126999000.

The previous prime is 139877891. The next prime is 139877911. The reversal of 139877903 is 309778931.

139877903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 139877903 - 2¹⁶ = 139812367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139877963) 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, 1328 + ... + 16778.

It is an arithmetic number, because the mean of its divisors is an integer number (19098672).

Almost surely, 2^139877903 is an apocalyptic number.

139877903 is a deficient number, since it is larger than the sum of its proper divisors (12911473).

139877903 is a wasteful number, since it uses less digits than its factorization.

139877903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16285.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 139877903 is about 11826.9989008201. The cubic root of 139877903 is about 519.0984167693.

The spelling of 139877903 in words is "one hundred thirty-nine million, eight hundred seventy-seven thousand, nine hundred three".