139801619 has 2 divisors, whose sum is σ = 139801620. Its totient is φ = 139801618.

The previous prime is 139801609. The next prime is 139801633. The reversal of 139801619 is 916108931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139801619 - 2⁴ = 139801603 is a prime.

It is a super-2 number, since 2×139801619² = 39088985350042322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_7901597 and since 139801619 and 7901597 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (139801609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69900809 + 69900810.

It is an arithmetic number, because the mean of its divisors is an integer number (69900810).

Almost surely, 2^139801619 is an apocalyptic number.

139801619 is a deficient number, since it is larger than the sum of its proper divisors (1).

139801619 is an equidigital number, since it uses as much as digits as its factorization.

139801619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 139801619 is about 11823.7734670451. The cubic root of 139801619 is about 519.0040342077.

The spelling of 139801619 in words is "one hundred thirty-nine million, eight hundred one thousand, six hundred nineteen".