94239643 has 4 divisors (see below), whose sum is σ = 94429000. Its totient is φ = 94050288.

The previous prime is 94239631. The next prime is 94239661. The reversal of 94239643 is 34693249.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34693249 = 1039 ⋅33391.

It is a cyclic number.

It is not a de Polignac number, because 94239643 - 2¹³ = 94231451 is a prime.

It is a super-2 number, since 2×94239643² = 17762220625534898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 94239596 and 94239605.

It is not an unprimeable number, because it can be changed into a prime (94239623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93930 + ... + 94927.

It is an arithmetic number, because the mean of its divisors is an integer number (23607250).

Almost surely, 2^94239643 is an apocalyptic number.

94239643 is a deficient number, since it is larger than the sum of its proper divisors (189357).

94239643 is a wasteful number, since it uses less digits than its factorization.

94239643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189356.

The product of its digits is 139968, while the sum is 40.

The square root of 94239643 is about 9707.7104921809. The cubic root of 94239643 is about 455.0696556403.

The spelling of 94239643 in words is "ninety-four million, two hundred thirty-nine thousand, six hundred forty-three".