95439781 has 2 divisors, whose sum is σ = 95439782. Its totient is φ = 95439780.

The previous prime is 95439749. The next prime is 95439787. The reversal of 95439781 is 18793459.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95374756 + 65025 = 9766^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 95439781 - 2⁵ = 95439749 is a prime.

It is a super-2 number, since 2×95439781² = 18217503594655922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (95439787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47719890 + 47719891.

It is an arithmetic number, because the mean of its divisors is an integer number (47719891).

Almost surely, 2^95439781 is an apocalyptic number.

It is an amenable number.

95439781 is a deficient number, since it is larger than the sum of its proper divisors (1).

95439781 is an equidigital number, since it uses as much as digits as its factorization.

95439781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 95439781 is about 9769.3285849131. The cubic root of 95439781 is about 456.9932773408.

The spelling of 95439781 in words is "ninety-five million, four hundred thirty-nine thousand, seven hundred eighty-one".