7744389121 has 8 divisors (see below), whose sum is σ = 8929056384. Its totient is φ = 6579303360.

The previous prime is 7744389101. The next prime is 7744389137. The reversal of 7744389121 is 1219834477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7744389121 - 2⁹ = 7744388609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7744389101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4894525 + ... + 4896106.

It is an arithmetic number, because the mean of its divisors is an integer number (1116132048).

It is a Proth number, since it is equal to 59085 ⋅ 2¹⁷ + 1 and 59085 < 2¹⁷.

Almost surely, 2^7744389121 is an apocalyptic number.

It is an amenable number.

7744389121 is a deficient number, since it is larger than the sum of its proper divisors (1184667263).

7744389121 is a wasteful number, since it uses less digits than its factorization.

7744389121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790751.

The product of its digits is 338688, while the sum is 46.

The square root of 7744389121 is about 88002.2108869999. The cubic root of 7744389121 is about 1978.4681142529.

The spelling of 7744389121 in words is "seven billion, seven hundred forty-four million, three hundred eighty-nine thousand, one hundred twenty-one".