749205847 has 4 divisors (see below), whose sum is σ = 806837080. Its totient is φ = 691574616.

The previous prime is 749205817. The next prime is 749205851. The reversal of 749205847 is 748502947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 749205847 - 2⁷ = 749205719 is a prime.

It is a super-2 number, since 2×749205847² = 1122618802357974818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749205797 and 749205806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749205817) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28815597 + ... + 28815622.

It is an arithmetic number, because the mean of its divisors is an integer number (201709270).

Almost surely, 2^749205847 is an apocalyptic number.

749205847 is a deficient number, since it is larger than the sum of its proper divisors (57631233).

749205847 is a wasteful number, since it uses less digits than its factorization.

749205847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57631232.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 749205847 is about 27371.6248512945. The cubic root of 749205847 is about 908.2395005467.

The spelling of 749205847 in words is "seven hundred forty-nine million, two hundred five thousand, eight hundred forty-seven".