139672619 has 2 divisors, whose sum is σ = 139672620. Its totient is φ = 139672618.

The previous prime is 139672573. The next prime is 139672627. The reversal of 139672619 is 916276931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139672619 - 2¹² = 139668523 is a prime.

It is a super-2 number, since 2×139672619² = 39016880996638322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139672619.

It is not a weakly prime, because it can be changed into another prime (139672219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69836309 + 69836310.

It is an arithmetic number, because the mean of its divisors is an integer number (69836310).

Almost surely, 2^139672619 is an apocalyptic number.

139672619 is a deficient number, since it is larger than the sum of its proper divisors (1).

139672619 is an equidigital number, since it uses as much as digits as its factorization.

139672619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 139672619 is about 11818.3170967782. The cubic root of 139672619 is about 518.8443504970.

The spelling of 139672619 in words is "one hundred thirty-nine million, six hundred seventy-two thousand, six hundred nineteen".