789874109 has 2 divisors, whose sum is σ = 789874110. Its totient is φ = 789874108.

The previous prime is 789874103. The next prime is 789874117. The reversal of 789874109 is 901478987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632371609 + 157502500 = 25147^2 + 12550^2 .

It is a cyclic number.

It is not a de Polignac number, because 789874109 - 2⁴ = 789874093 is a prime.

It is a super-2 number, since 2×789874109² = 1247802216137087762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (789874103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394937054 + 394937055.

It is an arithmetic number, because the mean of its divisors is an integer number (394937055).

Almost surely, 2^789874109 is an apocalyptic number.

It is an amenable number.

789874109 is a deficient number, since it is larger than the sum of its proper divisors (1).

789874109 is an equidigital number, since it uses as much as digits as its factorization.

789874109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 789874109 is about 28104.6990554960. The cubic root of 789874109 is about 924.3844393453.

The spelling of 789874109 in words is "seven hundred eighty-nine million, eight hundred seventy-four thousand, one hundred nine".