139628933 has 2 divisors, whose sum is σ = 139628934. Its totient is φ = 139628932.

The previous prime is 139628921. The next prime is 139628953. The reversal of 139628933 is 339826931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134954689 + 4674244 = 11617^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 139628933 - 2¹⁰ = 139627909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139628953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69814466 + 69814467.

It is an arithmetic number, because the mean of its divisors is an integer number (69814467).

Almost surely, 2^139628933 is an apocalyptic number.

It is an amenable number.

139628933 is a deficient number, since it is larger than the sum of its proper divisors (1).

139628933 is an equidigital number, since it uses as much as digits as its factorization.

139628933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 139628933 is about 11816.4687195456. The cubic root of 139628933 is about 518.7902511371.

The spelling of 139628933 in words is "one hundred thirty-nine million, six hundred twenty-eight thousand, nine hundred thirty-three".