749285749 has 4 divisors (see below), whose sum is σ = 757704780. Its totient is φ = 740866720.

The previous prime is 749285741. The next prime is 749285759. The reversal of 749285749 is 947582947.

749285749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947582947 = 587 ⋅1614281.

It can be written as a sum of positive squares in 2 ways, for example, as 397723249 + 351562500 = 19943^2 + 18750^2 .

It is a cyclic number.

It is not a de Polignac number, because 749285749 - 2³ = 749285741 is a prime.

It is a super-2 number, since 2×749285749² = 1122858267308982002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749285749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749285741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4209382 + ... + 4209559.

It is an arithmetic number, because the mean of its divisors is an integer number (189426195).

Almost surely, 2^749285749 is an apocalyptic number.

It is an amenable number.

749285749 is a deficient number, since it is larger than the sum of its proper divisors (8419031).

749285749 is an equidigital number, since it uses as much as digits as its factorization.

749285749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419030.

The product of its digits is 5080320, while the sum is 55.

The square root of 749285749 is about 27373.0843895970. The cubic root of 749285749 is about 908.2717869885.

The spelling of 749285749 in words is "seven hundred forty-nine million, two hundred eighty-five thousand, seven hundred forty-nine".