94428641 has 2 divisors, whose sum is σ = 94428642. Its totient is φ = 94428640.

The previous prime is 94428577. The next prime is 94428643. The reversal of 94428641 is 14682449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87030241 + 7398400 = 9329^2 + 2720^2 .

It is an emirp because it is prime and its reverse (14682449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94428641 - 2⁶ = 94428577 is a prime.

It is a super-2 number, since 2×94428641² = 17833536482213762, which contains 22 as substring.

Together with 94428643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 94428595 and 94428604.

It is not a weakly prime, because it can be changed into another prime (94428643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47214320 + 47214321.

It is an arithmetic number, because the mean of its divisors is an integer number (47214321).

Almost surely, 2^94428641 is an apocalyptic number.

It is an amenable number.

94428641 is a deficient number, since it is larger than the sum of its proper divisors (1).

94428641 is an equidigital number, since it uses as much as digits as its factorization.

94428641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 94428641 is about 9717.4400435506. The cubic root of 94428641 is about 455.3736672008.

The spelling of 94428641 in words is "ninety-four million, four hundred twenty-eight thousand, six hundred forty-one".