139343401 has 2 divisors, whose sum is σ = 139343402. Its totient is φ = 139343400.

The previous prime is 139343389. The next prime is 139343411. The reversal of 139343401 is 104343931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92064025 + 47279376 = 9595^2 + 6876^2 .

It is a cyclic number.

It is not a de Polignac number, because 139343401 - 2¹¹ = 139341353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139343401.

It is not a weakly prime, because it can be changed into another prime (139343411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69671700 + 69671701.

It is an arithmetic number, because the mean of its divisors is an integer number (69671701).

Almost surely, 2^139343401 is an apocalyptic number.

It is an amenable number.

139343401 is a deficient number, since it is larger than the sum of its proper divisors (1).

139343401 is an equidigital number, since it uses as much as digits as its factorization.

139343401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 139343401 is about 11804.3805851896. The cubic root of 139343401 is about 518.4363791458.

The spelling of 139343401 in words is "one hundred thirty-nine million, three hundred forty-three thousand, four hundred one".