679038149 has 2 divisors, whose sum is σ = 679038150. Its totient is φ = 679038148.

The previous prime is 679038137. The next prime is 679038181. The reversal of 679038149 is 941830976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539632900 + 139405249 = 23230^2 + 11807^2 .

It is a cyclic number.

It is not a de Polignac number, because 679038149 - 2⁴ = 679038133 is a prime.

It is a super-2 number, since 2×679038149² = 922185615594692402, 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 (679038119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339519074 + 339519075.

It is an arithmetic number, because the mean of its divisors is an integer number (339519075).

Almost surely, 2^679038149 is an apocalyptic number.

It is an amenable number.

679038149 is a deficient number, since it is larger than the sum of its proper divisors (1).

679038149 is an equidigital number, since it uses as much as digits as its factorization.

679038149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 679038149 is about 26058.3604434354. The cubic root of 679038149 is about 878.9511216292.

The spelling of 679038149 in words is "six hundred seventy-nine million, thirty-eight thousand, one hundred forty-nine".