994421567 has 4 divisors (see below), whose sum is σ = 997619376. Its totient is φ = 991223760.

The previous prime is 994421543. The next prime is 994421581. The reversal of 994421567 is 765124499.

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

It is a cyclic number.

It is not a de Polignac number, because 994421567 - 2¹⁴ = 994405183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994421587) 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, 1598438 + ... + 1599059.

It is an arithmetic number, because the mean of its divisors is an integer number (249404844).

Almost surely, 2^994421567 is an apocalyptic number.

994421567 is a deficient number, since it is larger than the sum of its proper divisors (3197809).

994421567 is a wasteful number, since it uses less digits than its factorization.

994421567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197808.

The product of its digits is 544320, while the sum is 47.

The square root of 994421567 is about 31534.4504788018. The cubic root of 994421567 is about 998.1370539204.

The spelling of 994421567 in words is "nine hundred ninety-four million, four hundred twenty-one thousand, five hundred sixty-seven".