246401993 has 2 divisors, whose sum is σ = 246401994. Its totient is φ = 246401992.

The previous prime is 246401977. The next prime is 246402001. The reversal of 246401993 is 399104642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227496889 + 18905104 = 15083^2 + 4348^2 .

It is a cyclic number.

It is not a de Polignac number, because 246401993 - 2⁴ = 246401977 is a prime.

It is not a weakly prime, because it can be changed into another prime (246401963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123200996 + 123200997.

It is an arithmetic number, because the mean of its divisors is an integer number (123200997).

Almost surely, 2^246401993 is an apocalyptic number.

It is an amenable number.

246401993 is a deficient number, since it is larger than the sum of its proper divisors (1).

246401993 is an equidigital number, since it uses as much as digits as its factorization.

246401993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 246401993 is about 15697.1969790788. The cubic root of 246401993 is about 626.9237731727.

The spelling of 246401993 in words is "two hundred forty-six million, four hundred one thousand, nine hundred ninety-three".