139941629 has 4 divisors (see below), whose sum is σ = 140115420. Its totient is φ = 139767840.

The previous prime is 139941623. The next prime is 139941679. The reversal of 139941629 is 926149931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81036004 + 58905625 = 9002^2 + 7675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139941629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139941629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139941623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85682 + ... + 87299.

It is an arithmetic number, because the mean of its divisors is an integer number (35028855).

Almost surely, 2^139941629 is an apocalyptic number.

It is an amenable number.

139941629 is a deficient number, since it is larger than the sum of its proper divisors (173791).

139941629 is an equidigital number, since it uses as much as digits as its factorization.

139941629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173790.

The product of its digits is 104976, while the sum is 44.

The square root of 139941629 is about 11829.6926840895. The cubic root of 139941629 is about 519.1772356122.

The spelling of 139941629 in words is "one hundred thirty-nine million, nine hundred forty-one thousand, six hundred twenty-nine".