246979189 has 2 divisors, whose sum is σ = 246979190. Its totient is φ = 246979188.

The previous prime is 246979177. The next prime is 246979217. The reversal of 246979189 is 981979642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222308100 + 24671089 = 14910^2 + 4967^2 .

It is a cyclic number.

It is not a de Polignac number, because 246979189 - 2¹¹ = 246977141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246976189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123489594 + 123489595.

It is an arithmetic number, because the mean of its divisors is an integer number (123489595).

Almost surely, 2^246979189 is an apocalyptic number.

It is an amenable number.

246979189 is a deficient number, since it is larger than the sum of its proper divisors (1).

246979189 is an equidigital number, since it uses as much as digits as its factorization.

246979189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The square root of 246979189 is about 15715.5715454450. The cubic root of 246979189 is about 627.4129138469.

The spelling of 246979189 in words is "two hundred forty-six million, nine hundred seventy-nine thousand, one hundred eighty-nine".