864263047 has 4 divisors (see below), whose sum is σ = 864453600. Its totient is φ = 864072496.

The previous prime is 864263041. The next prime is 864263107. The reversal of 864263047 is 740362468.

It is a happy number.

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-864263047 is a prime.

It is a super-2 number, since 2×864263047² = 1493901228819448418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864263041) 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, 88303 + ... + 97600.

It is an arithmetic number, because the mean of its divisors is an integer number (216113400).

Almost surely, 2^864263047 is an apocalyptic number.

864263047 is a deficient number, since it is larger than the sum of its proper divisors (190553).

864263047 is a wasteful number, since it uses less digits than its factorization.

864263047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190552.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 864263047 is about 29398.3510932161. The cubic root of 864263047 is about 952.5372790318.

The spelling of 864263047 in words is "eight hundred sixty-four million, two hundred sixty-three thousand, forty-seven".