8402288897 has 4 divisors (see below), whose sum is σ = 8403907140. Its totient is φ = 8400670656.

The previous prime is 8402288891. The next prime is 8402288903. The reversal of 8402288897 is 7988822048.

It is a Cunningham number, because it is equal to 91664²+1.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8402288891) and next prime (8402288903).

It can be written as a sum of positive squares in 2 ways, for example, as 8241734656 + 160554241 = 90784^2 + 12671^2 .

It is a cyclic number.

It is not a de Polignac number, because 8402288897 - 2¹⁴ = 8402272513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8402288891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801308 + ... + 811725.

It is an arithmetic number, because the mean of its divisors is an integer number (2100976785).

Almost surely, 2^8402288897 is an apocalyptic number.

It is an amenable number.

8402288897 is a deficient number, since it is larger than the sum of its proper divisors (1618243).

8402288897 is a wasteful number, since it uses less digits than its factorization.

8402288897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618242.

The product of its (nonzero) digits is 4128768, while the sum is 56.

The square root of 8402288897 is about 91664.0000054547. Note that the first 5 decimals coincide. The cubic root of 8402288897 is about 2032.9773338913.

The spelling of 8402288897 in words is "eight billion, four hundred two million, two hundred eighty-eight thousand, eight hundred ninety-seven".