749138323839 has 8 divisors (see below), whose sum is σ = 999761632560. Its totient is φ = 498970282176.

The previous prime is 749138323823. The next prime is 749138323853. The reversal of 749138323839 is 938323831947.

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

It is not a de Polignac number, because 749138323839 - 2⁴ = 749138323823 is a prime.

It is a super-2 number, since 2×749138323839² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749138323819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113812924 + ... + 113819505.

It is an arithmetic number, because the mean of its divisors is an integer number (124970204070).

Almost surely, 2^749138323839 is an apocalyptic number.

749138323839 is a deficient number, since it is larger than the sum of its proper divisors (250623308721).

749138323839 is a wasteful number, since it uses less digits than its factorization.

749138323839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227633529.

The product of its digits is 23514624, while the sum is 60.

The spelling of 749138323839 in words is "seven hundred forty-nine billion, one hundred thirty-eight million, three hundred twenty-three thousand, eight hundred thirty-nine".