94979897921 has 2 divisors, whose sum is σ = 94979897922. Its totient is φ = 94979897920.

The previous prime is 94979897899. The next prime is 94979897977. The reversal of 94979897921 is 12979897949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91182257296 + 3797640625 = 301964^2 + 61625^2 .

It is a cyclic number.

It is not a de Polignac number, because 94979897921 - 2¹⁴ = 94979881537 is a prime.

It is not a weakly prime, because it can be changed into another prime (94979197921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47489948960 + 47489948961.

It is an arithmetic number, because the mean of its divisors is an integer number (47489948961).

Almost surely, 2^94979897921 is an apocalyptic number.

It is an amenable number.

94979897921 is a deficient number, since it is larger than the sum of its proper divisors (1).

94979897921 is an equidigital number, since it uses as much as digits as its factorization.

94979897921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185177664, while the sum is 74.

The spelling of 94979897921 in words is "ninety-four billion, nine hundred seventy-nine million, eight hundred ninety-seven thousand, nine hundred twenty-one".