139488413 has 2 divisors, whose sum is σ = 139488414. Its totient is φ = 139488412.

The previous prime is 139488397. The next prime is 139488457. The reversal of 139488413 is 314884931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115498009 + 23990404 = 10747^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 139488413 - 2⁴ = 139488397 is a prime.

It is a super-2 number, since 2×139488413² = 38914034722517138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139488493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69744206 + 69744207.

It is an arithmetic number, because the mean of its divisors is an integer number (69744207).

Almost surely, 2^139488413 is an apocalyptic number.

It is an amenable number.

139488413 is a deficient number, since it is larger than the sum of its proper divisors (1).

139488413 is an equidigital number, since it uses as much as digits as its factorization.

139488413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 139488413 is about 11810.5212840077. The cubic root of 139488413 is about 518.6161590551.

The spelling of 139488413 in words is "one hundred thirty-nine million, four hundred eighty-eight thousand, four hundred thirteen".