139629773 has 8 divisors (see below), whose sum is σ = 141651480. Its totient is φ = 137620800.

The previous prime is 139629703. The next prime is 139629779. The reversal of 139629773 is 377926931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69438889 + 70190884 = 8333^2 + 8378^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 139629773 - 2¹² = 139625677 is a prime.

It is a super-3 number, since 3×139629773³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139629779) 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, 20111 + ... + 26147.

It is an arithmetic number, because the mean of its divisors is an integer number (17706435).

Almost surely, 2^139629773 is an apocalyptic number.

It is an amenable number.

139629773 is a deficient number, since it is larger than the sum of its proper divisors (2021707).

139629773 is a wasteful number, since it uses less digits than its factorization.

139629773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367.

The product of its digits is 428652, while the sum is 47.

The square root of 139629773 is about 11816.5042631059. The cubic root of 139629773 is about 518.7912914730.

The spelling of 139629773 in words is "one hundred thirty-nine million, six hundred twenty-nine thousand, seven hundred seventy-three".