83959476487 has 2 divisors, whose sum is σ = 83959476488. Its totient is φ = 83959476486.

The previous prime is 83959476451. The next prime is 83959476499. The reversal of 83959476487 is 78467495938.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83959476487 is a prime.

It is a super-2 number, since 2×83959476487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83959477487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41979738243 + 41979738244.

It is an arithmetic number, because the mean of its divisors is an integer number (41979738244).

Almost surely, 2^83959476487 is an apocalyptic number.

83959476487 is a deficient number, since it is larger than the sum of its proper divisors (1).

83959476487 is an equidigital number, since it uses as much as digits as its factorization.

83959476487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 70.

The spelling of 83959476487 in words is "eighty-three billion, nine hundred fifty-nine million, four hundred seventy-six thousand, four hundred eighty-seven".