94428881 has 4 divisors (see below), whose sum is σ = 96210612. Its totient is φ = 92647152.

The previous prime is 94428877. The next prime is 94428889. The reversal of 94428881 is 18882449.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18882449 = 389 ⋅48541.

It can be written as a sum of positive squares in 2 ways, for example, as 32947600 + 61481281 = 5740^2 + 7841^2 .

It is a cyclic number.

It is not a de Polignac number, because 94428881 - 2² = 94428877 is a prime.

It is a super-2 number, since 2×94428881² = 17833627133824322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94428889) 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, 890786 + ... + 890891.

It is an arithmetic number, because the mean of its divisors is an integer number (24052653).

Almost surely, 2^94428881 is an apocalyptic number.

It is an amenable number.

94428881 is a deficient number, since it is larger than the sum of its proper divisors (1781731).

94428881 is a wasteful number, since it uses less digits than its factorization.

94428881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781730.

The product of its digits is 147456, while the sum is 44.

The square root of 94428881 is about 9717.4523924741. The cubic root of 94428881 is about 455.3740529933.

The spelling of 94428881 in words is "ninety-four million, four hundred twenty-eight thousand, eight hundred eighty-one".