8009157897 has 12 divisors (see below), whose sum is σ = 12458690244. Its totient is φ = 4928712480.

The previous prime is 8009157887. The next prime is 8009157907. The reversal of 8009157897 is 7987519008.

It is an interprime number because it is at equal distance from previous prime (8009157887) and next prime (8009157907).

It can be written as a sum of positive squares in 2 ways, for example, as 3243188601 + 4765969296 = 56949^2 + 69036^2 .

It is not a de Polignac number, because 8009157897 - 2⁴ = 8009157881 is a prime.

It is a super-2 number, since 2×8009157897² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8009157817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34227054 + ... + 34227287.

It is an arithmetic number, because the mean of its divisors is an integer number (1038224187).

Almost surely, 2^8009157897 is an apocalyptic number.

It is an amenable number.

8009157897 is a deficient number, since it is larger than the sum of its proper divisors (4449532347).

8009157897 is a wasteful number, since it uses less digits than its factorization.

8009157897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68454360 (or 68454357 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The square root of 8009157897 is about 89493.8986579532. The cubic root of 8009157897 is about 2000.7628670633.

The spelling of 8009157897 in words is "eight billion, nine million, one hundred fifty-seven thousand, eight hundred ninety-seven".