246958991 has 2 divisors, whose sum is σ = 246958992. Its totient is φ = 246958990.

The previous prime is 246958969. The next prime is 246958997. The reversal of 246958991 is 199859642.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 246958991 - 2¹⁰ = 246957967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246958997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123479495 + 123479496.

It is an arithmetic number, because the mean of its divisors is an integer number (123479496).

Almost surely, 2^246958991 is an apocalyptic number.

246958991 is a deficient number, since it is larger than the sum of its proper divisors (1).

246958991 is an equidigital number, since it uses as much as digits as its factorization.

246958991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 246958991 is about 15714.9289212519. The cubic root of 246958991 is about 627.3958100691.

The spelling of 246958991 in words is "two hundred forty-six million, nine hundred fifty-eight thousand, nine hundred ninety-one".