744906869 has 6 divisors (see below), whose sum is σ = 866524374. Its totient is φ = 638491560.

The previous prime is 744906863. The next prime is 744906881. The reversal of 744906869 is 968609447.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 722910769 + 21996100 = 26887^2 + 4690^2 .

It is not a de Polignac number, because 744906869 - 2¹² = 744902773 is a prime.

It is a super-2 number, since 2×744906869² = 1109772486966766322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 744906869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744906863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7601042 + ... + 7601139.

It is an arithmetic number, because the mean of its divisors is an integer number (144420729).

Almost surely, 2^744906869 is an apocalyptic number.

It is an amenable number.

744906869 is a deficient number, since it is larger than the sum of its proper divisors (121617505).

744906869 is a wasteful number, since it uses less digits than its factorization.

744906869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15202195 (or 15202188 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 744906869 is about 27292.9820466727. The cubic root of 744906869 is about 906.4989937527.

The spelling of 744906869 in words is "seven hundred forty-four million, nine hundred six thousand, eight hundred sixty-nine".