855596749 has 4 divisors (see below), whose sum is σ = 977824864. Its totient is φ = 733368636.

The previous prime is 855596747. The next prime is 855596761. The reversal of 855596749 is 947695558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947695558 = 2 ⋅473847779.

It is not a de Polignac number, because 855596749 - 2¹ = 855596747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855596693 and 855596702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855596747) 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, 61114047 + ... + 61114060.

It is an arithmetic number, because the mean of its divisors is an integer number (244456216).

Almost surely, 2^855596749 is an apocalyptic number.

It is an amenable number.

855596749 is a deficient number, since it is larger than the sum of its proper divisors (122228115).

855596749 is a wasteful number, since it uses less digits than its factorization.

855596749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122228114.

The product of its digits is 13608000, while the sum is 58.

The square root of 855596749 is about 29250.5854471325. The cubic root of 855596749 is about 949.3427583302.

The spelling of 855596749 in words is "eight hundred fifty-five million, five hundred ninety-six thousand, seven hundred forty-nine".