139145353 has 2 divisors, whose sum is σ = 139145354. Its totient is φ = 139145352.

The previous prime is 139145351. The next prime is 139145371. The reversal of 139145353 is 353541931.

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., 137639824 + 1505529 = 11732^2 + 1227^2 .

It is an emirp because it is prime and its reverse (353541931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139145353 - 2¹ = 139145351 is a prime.

It is a super-2 number, since 2×139145353² = 38722858522989218, which contains 22 as substring.

Together with 139145351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139145351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69572676 + 69572677.

It is an arithmetic number, because the mean of its divisors is an integer number (69572677).

Almost surely, 2^139145353 is an apocalyptic number.

It is an amenable number.

139145353 is a deficient number, since it is larger than the sum of its proper divisors (1).

139145353 is an equidigital number, since it uses as much as digits as its factorization.

139145353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 139145353 is about 11795.9888521480. The cubic root of 139145353 is about 518.1906457761.

The spelling of 139145353 in words is "one hundred thirty-nine million, one hundred forty-five thousand, three hundred fifty-three".