20935379 has 4 divisors (see below), whose sum is σ = 21446040. Its totient is φ = 20424720.

The previous prime is 20935373. The next prime is 20935399. The reversal of 20935379 is 97353902.

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 20935379 - 2²⁴ = 4158163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20935373) 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, 255269 + ... + 255350.

It is an arithmetic number, because the mean of its divisors is an integer number (5361510).

Almost surely, 2^20935379 is an apocalyptic number.

20935379 is a deficient number, since it is larger than the sum of its proper divisors (510661).

20935379 is an equidigital number, since it uses as much as digits as its factorization.

20935379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510660.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 20935379 is about 4575.5195333426. The cubic root of 20935379 is about 275.6091356949.

The spelling of 20935379 in words is "twenty million, nine hundred thirty-five thousand, three hundred seventy-nine".