859764049 has 4 divisors (see below), whose sum is σ = 870122736. Its totient is φ = 849405364.

The previous prime is 859764047. The next prime is 859764071. The reversal of 859764049 is 940467958.

It is a happy number.

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: 940467958 = 2 ⋅470233979.

It is a cyclic number.

It is not a de Polignac number, because 859764049 - 2¹ = 859764047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 859763987 and 859764005.

It is not an unprimeable number, because it can be changed into a prime (859764047) 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, 5179219 + ... + 5179384.

It is an arithmetic number, because the mean of its divisors is an integer number (217530684).

Almost surely, 2^859764049 is an apocalyptic number.

It is an amenable number.

859764049 is a deficient number, since it is larger than the sum of its proper divisors (10358687).

859764049 is a wasteful number, since it uses less digits than its factorization.

859764049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10358686.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 859764049 is about 29321.7333900982. The cubic root of 859764049 is about 950.8815635919.

The spelling of 859764049 in words is "eight hundred fifty-nine million, seven hundred sixty-four thousand, forty-nine".