139888143 has 6 divisors (see below), whose sum is σ = 202060664. Its totient is φ = 93258756.

The previous prime is 139888129. The next prime is 139888169. The reversal of 139888143 is 341888931.

It is not a de Polignac number, because 139888143 - 2⁶ = 139888079 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 (139888103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7771555 + ... + 7771572.

Almost surely, 2^139888143 is an apocalyptic number.

139888143 is a deficient number, since it is larger than the sum of its proper divisors (62172521).

139888143 is a wasteful number, since it uses less digits than its factorization.

139888143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15543133 (or 15543130 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 139888143 is about 11827.4318006911. The cubic root of 139888143 is about 519.1110836213. Note that the first 3 decimals are identical.

The spelling of 139888143 in words is "one hundred thirty-nine million, eight hundred eighty-eight thousand, one hundred forty-three".