139198471 has 2 divisors, whose sum is σ = 139198472. Its totient is φ = 139198470.

The previous prime is 139198459. The next prime is 139198483. The reversal of 139198471 is 174891931.

It is a balanced prime because it is at equal distance from previous prime (139198459) and next prime (139198483).

It is a cyclic number.

It is not a de Polignac number, because 139198471 - 2⁷ = 139198343 is a prime.

It is a super-3 number, since 3×139198471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139198421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69599235 + 69599236.

It is an arithmetic number, because the mean of its divisors is an integer number (69599236).

Almost surely, 2^139198471 is an apocalyptic number.

139198471 is a deficient number, since it is larger than the sum of its proper divisors (1).

139198471 is an equidigital number, since it uses as much as digits as its factorization.

139198471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 139198471 is about 11798.2401653806. The cubic root of 139198471 is about 518.2565762302.

The spelling of 139198471 in words is "one hundred thirty-nine million, one hundred ninety-eight thousand, four hundred seventy-one".