139696619 has 2 divisors, whose sum is σ = 139696620. Its totient is φ = 139696618.

The previous prime is 139696603. The next prime is 139696639. The reversal of 139696619 is 916696931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139696619 - 2⁴ = 139696603 is a prime.

It is a super-2 number, since 2×139696619² = 39030290720062322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139696639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69848309 + 69848310.

It is an arithmetic number, because the mean of its divisors is an integer number (69848310).

Almost surely, 2^139696619 is an apocalyptic number.

139696619 is a deficient number, since it is larger than the sum of its proper divisors (1).

139696619 is an equidigital number, since it uses as much as digits as its factorization.

139696619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 50.

The square root of 139696619 is about 11819.3324261567. The cubic root of 139696619 is about 518.8740665367.

The spelling of 139696619 in words is "one hundred thirty-nine million, six hundred ninety-six thousand, six hundred nineteen".