865394049 has 32 divisors (see below), whose sum is σ = 1289115520. Its totient is φ = 512967168.

The previous prime is 865394041. The next prime is 865394053. The reversal of 865394049 is 940493568.

865394049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 865394049 - 2³ = 865394041 is a prime.

It is a super-2 number, since 2×865394049² = 1497813720089228802, 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 = 865393989 and 865394007.

It is not an unprimeable number, because it can be changed into a prime (865394041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118887 + ... + 125955.

It is an arithmetic number, because the mean of its divisors is an integer number (40284860).

Almost surely, 2^865394049 is an apocalyptic number.

It is an amenable number.

865394049 is a deficient number, since it is larger than the sum of its proper divisors (423721471).

865394049 is a wasteful number, since it uses less digits than its factorization.

865394049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 865394049 is about 29417.5806109204. The cubic root of 865394049 is about 952.9526047337.

The spelling of 865394049 in words is "eight hundred sixty-five million, three hundred ninety-four thousand, forty-nine".