749139398385 has 16 divisors (see below), whose sum is σ = 1369854900096. Its totient is φ = 342463724928.

The previous prime is 749139398369. The next prime is 749139398437. The reversal of 749139398385 is 583893931947.

It is not a de Polignac number, because 749139398385 - 2⁴ = 749139398369 is a prime.

It is a super-2 number, since 2×749139398385² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3567330364 + ... + 3567330573.

It is an arithmetic number, because the mean of its divisors is an integer number (85615931256).

Almost surely, 2^749139398385 is an apocalyptic number.

It is an amenable number.

749139398385 is a deficient number, since it is larger than the sum of its proper divisors (620715501711).

749139398385 is a wasteful number, since it uses less digits than its factorization.

749139398385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134660952.

The product of its digits is 176359680, while the sum is 69.

The spelling of 749139398385 in words is "seven hundred forty-nine billion, one hundred thirty-nine million, three hundred ninety-eight thousand, three hundred eighty-five".