868225739 has 4 divisors (see below), whose sum is σ = 870685656. Its totient is φ = 865765824.

The previous prime is 868225727. The next prime is 868225763. The reversal of 868225739 is 937522868.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868225739 is a prime.

It is a super-2 number, since 2×868225739² = 1507631867724192242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868225789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229429 + ... + 1230134.

It is an arithmetic number, because the mean of its divisors is an integer number (217671414).

Almost surely, 2^868225739 is an apocalyptic number.

868225739 is a deficient number, since it is larger than the sum of its proper divisors (2459917).

868225739 is a wasteful number, since it uses less digits than its factorization.

868225739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459916.

The product of its digits is 1451520, while the sum is 50.

The square root of 868225739 is about 29465.6705167217. The cubic root of 868225739 is about 953.9908710397.

The spelling of 868225739 in words is "eight hundred sixty-eight million, two hundred twenty-five thousand, seven hundred thirty-nine".