139674919 has 2 divisors, whose sum is σ = 139674920. Its totient is φ = 139674918.

The previous prime is 139674881. The next prime is 139674937. The reversal of 139674919 is 919476931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139674919 - 2⁹ = 139674407 is a prime.

It is a super-2 number, since 2×139674919² = 39018165995313122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139674989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69837459 + 69837460.

It is an arithmetic number, because the mean of its divisors is an integer number (69837460).

Almost surely, 2^139674919 is an apocalyptic number.

139674919 is a deficient number, since it is larger than the sum of its proper divisors (1).

139674919 is an equidigital number, since it uses as much as digits as its factorization.

139674919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 139674919 is about 11818.4144029561. The cubic root of 139674919 is about 518.8471984316.

The spelling of 139674919 in words is "one hundred thirty-nine million, six hundred seventy-four thousand, nine hundred nineteen".