20893339 has 2 divisors, whose sum is σ = 20893340. Its totient is φ = 20893338.

The previous prime is 20893319. The next prime is 20893387. The reversal of 20893339 is 93339802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20893339 - 2⁷ = 20893211 is a prime.

It is a super-2 number, since 2×20893339² = 873063229137842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20893298 and 20893307.

It is not a weakly prime, because it can be changed into another prime (20893309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10446669 + 10446670.

It is an arithmetic number, because the mean of its divisors is an integer number (10446670).

Almost surely, 2^20893339 is an apocalyptic number.

20893339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20893339 is an equidigital number, since it uses as much as digits as its factorization.

20893339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 20893339 is about 4570.9232109061. The cubic root of 20893339 is about 275.4245299715.

The spelling of 20893339 in words is "twenty million, eight hundred ninety-three thousand, three hundred thirty-nine".