20049349 has 2 divisors, whose sum is σ = 20049350. Its totient is φ = 20049348.

The previous prime is 20049329. The next prime is 20049361. The reversal of 20049349 is 94394002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18645124 + 1404225 = 4318^2 + 1185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20049349 is a prime.

It is equal to p_1273567 and since 20049349 and 1273567 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20049349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20049319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10024674 + 10024675.

It is an arithmetic number, because the mean of its divisors is an integer number (10024675).

Almost surely, 2^20049349 is an apocalyptic number.

It is an amenable number.

20049349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20049349 is an equidigital number, since it uses as much as digits as its factorization.

20049349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20049349 is about 4477.6499416547. The cubic root of 20049349 is about 271.6648346111.

The spelling of 20049349 in words is "twenty million, forty-nine thousand, three hundred forty-nine".