20846393 has 2 divisors, whose sum is σ = 20846394. Its totient is φ = 20846392.

The previous prime is 20846383. The next prime is 20846407. The reversal of 20846393 is 39364802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20187049 + 659344 = 4493^2 + 812^2 .

It is a cyclic number.

It is not a de Polignac number, because 20846393 - 2⁴ = 20846377 is a prime.

It is a super-2 number, since 2×20846393² = 869144202220898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20846383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10423196 + 10423197.

It is an arithmetic number, because the mean of its divisors is an integer number (10423197).

Almost surely, 2^20846393 is an apocalyptic number.

It is an amenable number.

20846393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20846393 is an equidigital number, since it uses as much as digits as its factorization.

20846393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20846393 is about 4565.7850365518. The cubic root of 20846393 is about 275.2180881570.

The spelling of 20846393 in words is "twenty million, eight hundred forty-six thousand, three hundred ninety-three".