139953589 has 2 divisors, whose sum is σ = 139953590. Its totient is φ = 139953588.

The previous prime is 139953587. The next prime is 139953599. The reversal of 139953589 is 985359931.

It is a happy number.

139953589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138250564 + 1703025 = 11758^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 139953589 - 2¹ = 139953587 is a prime.

Together with 139953587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139953587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69976794 + 69976795.

It is an arithmetic number, because the mean of its divisors is an integer number (69976795).

Almost surely, 2^139953589 is an apocalyptic number.

It is an amenable number.

139953589 is a deficient number, since it is larger than the sum of its proper divisors (1).

139953589 is an equidigital number, since it uses as much as digits as its factorization.

139953589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1312200, while the sum is 52.

The square root of 139953589 is about 11830.1981809266. The cubic root of 139953589 is about 519.1920255474.

The spelling of 139953589 in words is "one hundred thirty-nine million, nine hundred fifty-three thousand, five hundred eighty-nine".