139469629 has 4 divisors (see below), whose sum is σ = 150198076. Its totient is φ = 128741184.

The previous prime is 139469623. The next prime is 139469641. The reversal of 139469629 is 926964931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926964931 = 1061 ⋅873671.

It can be written as a sum of positive squares in 2 ways, for example, as 79174404 + 60295225 = 8898^2 + 7765^2 .

It is not a de Polignac number, because 139469629 - 2⁷ = 139469501 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 (139469623) 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 3 ways as a sum of consecutive naturals, for example, 5364204 + ... + 5364229.

It is an arithmetic number, because the mean of its divisors is an integer number (37549519).

Almost surely, 2^139469629 is an apocalyptic number.

It is an amenable number.

139469629 is a deficient number, since it is larger than the sum of its proper divisors (10728447).

139469629 is a wasteful number, since it uses less digits than its factorization.

139469629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10728446.

The product of its digits is 629856, while the sum is 49.

The square root of 139469629 is about 11809.7260340789. The cubic root of 139469629 is about 518.5928784517.

The spelling of 139469629 in words is "one hundred thirty-nine million, four hundred sixty-nine thousand, six hundred twenty-nine".