139903097449 has 2 divisors, whose sum is σ = 139903097450. Its totient is φ = 139903097448.

The previous prime is 139903097417. The next prime is 139903097471. The reversal of 139903097449 is 944790309931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139161079849 + 742017600 = 373043^2 + 27240^2 .

It is a cyclic number.

It is not a de Polignac number, because 139903097449 - 2⁵ = 139903097417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139903097393 and 139903097402.

It is not a weakly prime, because it can be changed into another prime (139903097149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69951548724 + 69951548725.

It is an arithmetic number, because the mean of its divisors is an integer number (69951548725).

Almost surely, 2^139903097449 is an apocalyptic number.

It is an amenable number.

139903097449 is a deficient number, since it is larger than the sum of its proper divisors (1).

139903097449 is an equidigital number, since it uses as much as digits as its factorization.

139903097449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 58.

The spelling of 139903097449 in words is "one hundred thirty-nine billion, nine hundred three million, ninety-seven thousand, four hundred forty-nine".