724909949 has 2 divisors, whose sum is σ = 724909950. Its totient is φ = 724909948.

The previous prime is 724909873. The next prime is 724909951. The reversal of 724909949 is 949909427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458730724 + 266179225 = 21418^2 + 16315^2 .

It is a cyclic number.

It is not a de Polignac number, because 724909949 - 2¹⁶ = 724844413 is a prime.

Together with 724909951, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724909949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724909849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362454974 + 362454975.

It is an arithmetic number, because the mean of its divisors is an integer number (362454975).

Almost surely, 2^724909949 is an apocalyptic number.

It is an amenable number.

724909949 is a deficient number, since it is larger than the sum of its proper divisors (1).

724909949 is an equidigital number, since it uses as much as digits as its factorization.

724909949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 724909949 is about 26924.1517786540. The cubic root of 724909949 is about 898.3136938264.

The spelling of 724909949 in words is "seven hundred twenty-four million, nine hundred nine thousand, nine hundred forty-nine".