7955397487 has 2 divisors, whose sum is σ = 7955397488. Its totient is φ = 7955397486.

The previous prime is 7955397473. The next prime is 7955397547. The reversal of 7955397487 is 7847935597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7955397487 - 2²³ = 7947008879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7955397287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3977698743 + 3977698744.

It is an arithmetic number, because the mean of its divisors is an integer number (3977698744).

Almost surely, 2^7955397487 is an apocalyptic number.

7955397487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7955397487 is an equidigital number, since it uses as much as digits as its factorization.

7955397487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66679200, while the sum is 64.

The square root of 7955397487 is about 89193.0349691051. The cubic root of 7955397487 is about 1996.2761948574.

The spelling of 7955397487 in words is "seven billion, nine hundred fifty-five million, three hundred ninety-seven thousand, four hundred eighty-seven".