20244479 has 2 divisors, whose sum is σ = 20244480. Its totient is φ = 20244478.

The previous prime is 20244449. The next prime is 20244491. The reversal of 20244479 is 97444202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20244479 - 2¹² = 20240383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20244409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122239 + 10122240.

It is an arithmetic number, because the mean of its divisors is an integer number (10122240).

Almost surely, 2^20244479 is an apocalyptic number.

20244479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244479 is an equidigital number, since it uses as much as digits as its factorization.

20244479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20244479 is about 4499.3865137372. The cubic root of 20244479 is about 272.5433155059.

The spelling of 20244479 in words is "twenty million, two hundred forty-four thousand, four hundred seventy-nine".