20379199 has 4 divisors (see below), whose sum is σ = 21081960. Its totient is φ = 19676440.

The previous prime is 20379187. The next prime is 20379217. The reversal of 20379199 is 99197302.

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 20379199 - 2¹⁷ = 20248127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351337 + ... + 351394.

It is an arithmetic number, because the mean of its divisors is an integer number (5270490).

Almost surely, 2^20379199 is an apocalyptic number.

20379199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20379199 is a deficient number, since it is larger than the sum of its proper divisors (702761).

20379199 is an equidigital number, since it uses as much as digits as its factorization.

20379199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702760.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 20379199 is about 4514.3326195574. The cubic root of 20379199 is about 273.1465398691.

It can be divided in two parts, 2037 and 9199, that added together give a square (11236 = 106²).

The spelling of 20379199 in words is "twenty million, three hundred seventy-nine thousand, one hundred ninety-nine".