246406921 has 2 divisors, whose sum is σ = 246406922. Its totient is φ = 246406920.

The previous prime is 246406861. The next prime is 246406931. The reversal of 246406921 is 129604642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228463225 + 17943696 = 15115^2 + 4236^2 .

It is a cyclic number.

It is not a de Polignac number, because 246406921 - 2⁹ = 246406409 is a prime.

It is not a weakly prime, because it can be changed into another prime (246406931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123203460 + 123203461.

It is an arithmetic number, because the mean of its divisors is an integer number (123203461).

Almost surely, 2^246406921 is an apocalyptic number.

It is an amenable number.

246406921 is a deficient number, since it is larger than the sum of its proper divisors (1).

246406921 is an equidigital number, since it uses as much as digits as its factorization.

246406921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 246406921 is about 15697.3539489941. The cubic root of 246406921 is about 626.9279526029.

The spelling of 246406921 in words is "two hundred forty-six million, four hundred six thousand, nine hundred twenty-one".