139086429 has 8 divisors (see below), whose sum is σ = 191430912. Its totient is φ = 89733120.

The previous prime is 139086421. The next prime is 139086509. The reversal of 139086429 is 924680931.

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

It is not a de Polignac number, because 139086429 - 2³ = 139086421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139086421) 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, 747684 + ... + 747869.

It is an arithmetic number, because the mean of its divisors is an integer number (23928864).

Almost surely, 2^139086429 is an apocalyptic number.

It is an amenable number.

139086429 is a deficient number, since it is larger than the sum of its proper divisors (52344483).

139086429 is a wasteful number, since it uses less digits than its factorization.

139086429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495587.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 139086429 is about 11793.4909589994. The cubic root of 139086429 is about 518.1174892386.

The spelling of 139086429 in words is "one hundred thirty-nine million, eighty-six thousand, four hundred twenty-nine".