20497039 has 2 divisors, whose sum is σ = 20497040. Its totient is φ = 20497038.

The previous prime is 20497033. The next prime is 20497063. The reversal of 20497039 is 93079402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20497039 - 2³ = 20497031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20496995 and 20497013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20497031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10248519 + 10248520.

It is an arithmetic number, because the mean of its divisors is an integer number (10248520).

Almost surely, 2^20497039 is an apocalyptic number.

20497039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20497039 is an equidigital number, since it uses as much as digits as its factorization.

20497039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 20497039 is about 4527.3655695117. The cubic root of 20497039 is about 273.6720061651.

The spelling of 20497039 in words is "twenty million, four hundred ninety-seven thousand, thirty-nine".