7289897863 has 4 divisors (see below), whose sum is σ = 7606849968. Its totient is φ = 6972945760.

The previous prime is 7289897851. The next prime is 7289897921. The reversal of 7289897863 is 3687989827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3687989827 = 29 ⋅127172063.

It is a cyclic number.

It is not a de Polignac number, because 7289897863 - 2²¹ = 7287800711 is a prime.

It is a super-2 number, since 2×7289897863² (a number of 21 digits) 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 (7289897803) 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, 158476018 + ... + 158476063.

It is an arithmetic number, because the mean of its divisors is an integer number (1901712492).

Almost surely, 2^7289897863 is an apocalyptic number.

7289897863 is a deficient number, since it is larger than the sum of its proper divisors (316952105).

7289897863 is a wasteful number, since it uses less digits than its factorization.

7289897863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316952104.

The product of its digits is 73156608, while the sum is 67.

The square root of 7289897863 is about 85380.8987010561. The cubic root of 7289897863 is about 1938.9821655339.

The spelling of 7289897863 in words is "seven billion, two hundred eighty-nine million, eight hundred ninety-seven thousand, eight hundred sixty-three".