720000049 has 2 divisors, whose sum is σ = 720000050. Its totient is φ = 720000048.

The previous prime is 719999999. The next prime is 720000053. The reversal of 720000049 is 940000027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670551025 + 49449024 = 25895^2 + 7032^2 .

It is a cyclic number.

It is not a de Polignac number, because 720000049 - 2⁷ = 719999921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 719999984 and 720000029.

It is not a weakly prime, because it can be changed into another prime (720000059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360000024 + 360000025.

It is an arithmetic number, because the mean of its divisors is an integer number (360000025).

Almost surely, 2^720000049 is an apocalyptic number.

It is an amenable number.

720000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

720000049 is an equidigital number, since it uses as much as digits as its factorization.

720000049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 720000049 is about 26832.8166430586. The cubic root of 720000049 is about 896.2809696437.

Subtracting from 720000049 its sum of digits (22), we obtain a palindrome (720000027).

The spelling of 720000049 in words is "seven hundred twenty million, forty-nine", and thus it is an aban number.