807989090947 has 2 divisors, whose sum is σ = 807989090948. Its totient is φ = 807989090946.

The previous prime is 807989090917. The next prime is 807989091023. The reversal of 807989090947 is 749090989708.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 807989090947 - 2⁷ = 807989090819 is a prime.

It is not a weakly prime, because it can be changed into another prime (807989090917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403994545473 + 403994545474.

It is an arithmetic number, because the mean of its divisors is an integer number (403994545474).

Almost surely, 2^807989090947 is an apocalyptic number.

807989090947 is a deficient number, since it is larger than the sum of its proper divisors (1).

807989090947 is an equidigital number, since it uses as much as digits as its factorization.

807989090947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82301184, while the sum is 70.

The spelling of 807989090947 in words is "eight hundred seven billion, nine hundred eighty-nine million, ninety thousand, nine hundred forty-seven".