10239440749 has 2 divisors, whose sum is σ = 10239440750. Its totient is φ = 10239440748.

The previous prime is 10239440681. The next prime is 10239440767. The reversal of 10239440749 is 94704493201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10239416100 + 24649 = 101190^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 10239440749 - 2¹⁷ = 10239309677 is a prime.

It is a super-2 number, since 2×10239440749² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10239440779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5119720374 + 5119720375.

It is an arithmetic number, because the mean of its divisors is an integer number (5119720375).

Almost surely, 2^10239440749 is an apocalyptic number.

It is an amenable number.

10239440749 is a deficient number, since it is larger than the sum of its proper divisors (1).

10239440749 is an equidigital number, since it uses as much as digits as its factorization.

10239440749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 10239440749 in words is "ten billion, two hundred thirty-nine million, four hundred forty thousand, seven hundred forty-nine".