139545349 has 2 divisors, whose sum is σ = 139545350. Its totient is φ = 139545348.

The previous prime is 139545313. The next prime is 139545403. The reversal of 139545349 is 943545931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72420100 + 67125249 = 8510^2 + 8193^2 .

It is a cyclic number.

It is not a de Polignac number, because 139545349 - 2⁷ = 139545221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139545649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69772674 + 69772675.

It is an arithmetic number, because the mean of its divisors is an integer number (69772675).

Almost surely, 2^139545349 is an apocalyptic number.

It is an amenable number.

139545349 is a deficient number, since it is larger than the sum of its proper divisors (1).

139545349 is an equidigital number, since it uses as much as digits as its factorization.

139545349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 43.

The square root of 139545349 is about 11812.9314312748. The cubic root of 139545349 is about 518.6867118997.

The spelling of 139545349 in words is "one hundred thirty-nine million, five hundred forty-five thousand, three hundred forty-nine".