1009723449 has 24 divisors (see below), whose sum is σ = 1658229408. Its totient is φ = 543043200.

The previous prime is 1009723439. The next prime is 1009723459. The reversal of 1009723449 is 9443279001.

1009723449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1009723439) and next prime (1009723459).

It is not a de Polignac number, because 1009723449 - 2⁷ = 1009723321 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1009723439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199527 + ... + 204524.

It is an arithmetic number, because the mean of its divisors is an integer number (69092892).

Almost surely, 2^1009723449 is an apocalyptic number.

It is an amenable number.

1009723449 is a deficient number, since it is larger than the sum of its proper divisors (648505959).

1009723449 is a wasteful number, since it uses less digits than its factorization.

1009723449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404085 (or 404078 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1009723449 is about 31776.1459116741. The cubic root of 1009723449 is about 1003.2307009977.

The spelling of 1009723449 in words is "one billion, nine million, seven hundred twenty-three thousand, four hundred forty-nine".