49321609 has 2 divisors, whose sum is σ = 49321610. Its totient is φ = 49321608.

The previous prime is 49321561. The next prime is 49321619. The reversal of 49321609 is 90612394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 41209 = 7020^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 49321609 - 2²³ = 40933001 is a prime.

It is a super-2 number, since 2×49321609² = 4865242228697762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49321619) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24660804 + 24660805.

It is an arithmetic number, because the mean of its divisors is an integer number (24660805).

Almost surely, 2^49321609 is an apocalyptic number.

It is an amenable number.

49321609 is a deficient number, since it is larger than the sum of its proper divisors (1).

49321609 is an equidigital number, since it uses as much as digits as its factorization.

49321609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 49321609 is about 7022.9345006201. The cubic root of 49321609 is about 366.7294146974.

The spelling of 49321609 in words is "forty-nine million, three hundred twenty-one thousand, six hundred nine".