20893379 has 4 divisors (see below), whose sum is σ = 22500576. Its totient is φ = 19286184.

The previous prime is 20893339. The next prime is 20893387. The reversal of 20893379 is 97339802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20893379 - 2¹⁶ = 20827843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20893309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803579 + ... + 803604.

It is an arithmetic number, because the mean of its divisors is an integer number (5625144).

Almost surely, 2^20893379 is an apocalyptic number.

20893379 is a deficient number, since it is larger than the sum of its proper divisors (1607197).

20893379 is a wasteful number, since it uses less digits than its factorization.

20893379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607196.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 20893379 is about 4570.9275863877. The cubic root of 20893379 is about 275.4247057369.

The spelling of 20893379 in words is "twenty million, eight hundred ninety-three thousand, three hundred seventy-nine".