94355981 has 4 divisors (see below), whose sum is σ = 94463964. Its totient is φ = 94248000.

The previous prime is 94355939. The next prime is 94356007. The reversal of 94355981 is 18955349.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8497225 + 85858756 = 2915^2 + 9266^2 .

It is a cyclic number.

It is not a de Polignac number, because 94355981 - 2¹⁸ = 94093837 is a prime.

It is a super-2 number, since 2×94355981² = 17806102300944722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94355281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52670 + ... + 54431.

It is an arithmetic number, because the mean of its divisors is an integer number (23615991).

Almost surely, 2^94355981 is an apocalyptic number.

It is an amenable number.

94355981 is a deficient number, since it is larger than the sum of its proper divisors (107983).

94355981 is a wasteful number, since it uses less digits than its factorization.

94355981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107982.

The product of its digits is 194400, while the sum is 44.

The square root of 94355981 is about 9713.7006851148. The cubic root of 94355981 is about 455.2568384486.

The spelling of 94355981 in words is "ninety-four million, three hundred fifty-five thousand, nine hundred eighty-one".