139948219 has 2 divisors, whose sum is σ = 139948220. Its totient is φ = 139948218.

The previous prime is 139948201. The next prime is 139948231. The reversal of 139948219 is 912849931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139948219 - 2²¹ = 137851067 is a prime.

It is a super-2 number, since 2×139948219² = 39171008002543922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139948279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69974109 + 69974110.

It is an arithmetic number, because the mean of its divisors is an integer number (69974110).

Almost surely, 2^139948219 is an apocalyptic number.

139948219 is a deficient number, since it is larger than the sum of its proper divisors (1).

139948219 is an equidigital number, since it uses as much as digits as its factorization.

139948219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 139948219 is about 11829.9712172093. The cubic root of 139948219 is about 519.1853850202.

The spelling of 139948219 in words is "one hundred thirty-nine million, nine hundred forty-eight thousand, two hundred nineteen".