139351061 has 8 divisors (see below), whose sum is σ = 146188800. Its totient is φ = 132648880.

The previous prime is 139351049. The next prime is 139351067. The reversal of 139351061 is 160153931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139351061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139351067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31781 + ... + 35898.

It is an arithmetic number, because the mean of its divisors is an integer number (18273600).

Almost surely, 2^139351061 is an apocalyptic number.

It is an amenable number.

139351061 is a deficient number, since it is larger than the sum of its proper divisors (6837739).

139351061 is an equidigital number, since it uses as much as digits as its factorization.

139351061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67779.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 139351061 is about 11804.7050365522. The cubic root of 139351061 is about 518.4458788180.

The spelling of 139351061 in words is "one hundred thirty-nine million, three hundred fifty-one thousand, sixty-one".