94197881 has 2 divisors, whose sum is σ = 94197882. Its totient is φ = 94197880.

The previous prime is 94197841. The next prime is 94197899. The reversal of 94197881 is 18879149.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59151481 + 35046400 = 7691^2 + 5920^2 .

It is a cyclic number.

It is not a de Polignac number, because 94197881 - 2²⁶ = 27089017 is a prime.

It is a super-2 number, since 2×94197881² = 17746481569780322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94197841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47098940 + 47098941.

It is an arithmetic number, because the mean of its divisors is an integer number (47098941).

Almost surely, 2^94197881 is an apocalyptic number.

It is an amenable number.

94197881 is a deficient number, since it is larger than the sum of its proper divisors (1).

94197881 is an equidigital number, since it uses as much as digits as its factorization.

94197881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 47.

The square root of 94197881 is about 9705.5592832150. The cubic root of 94197881 is about 455.0024248150.

The spelling of 94197881 in words is "ninety-four million, one hundred ninety-seven thousand, eight hundred eighty-one".