139953349 has 2 divisors, whose sum is σ = 139953350. Its totient is φ = 139953348.

The previous prime is 139953271. The next prime is 139953361. The reversal of 139953349 is 943359931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127577025 + 12376324 = 11295^2 + 3518^2 .

It is an emirp because it is prime and its reverse (943359931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139953349 - 2⁹ = 139952837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139953299 and 139953308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139953379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69976674 + 69976675.

It is an arithmetic number, because the mean of its divisors is an integer number (69976675).

Almost surely, 2^139953349 is an apocalyptic number.

It is an amenable number.

139953349 is a deficient number, since it is larger than the sum of its proper divisors (1).

139953349 is an equidigital number, since it uses as much as digits as its factorization.

139953349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 46.

The square root of 139953349 is about 11830.1880373898. The cubic root of 139953349 is about 519.1917287677.

The spelling of 139953349 in words is "one hundred thirty-nine million, nine hundred fifty-three thousand, three hundred forty-nine".