468994591 has 4 divisors (see below), whose sum is σ = 505071112. Its totient is φ = 432918072.

The previous prime is 468994543. The next prime is 468994601. The reversal of 468994591 is 195499864.

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 468994591 - 2²¹ = 466897439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (468994501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18038241 + ... + 18038266.

It is an arithmetic number, because the mean of its divisors is an integer number (126267778).

Almost surely, 2^468994591 is an apocalyptic number.

468994591 is a deficient number, since it is larger than the sum of its proper divisors (36076521).

468994591 is a wasteful number, since it uses less digits than its factorization.

468994591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36076520.

The product of its digits is 2799360, while the sum is 55.

The square root of 468994591 is about 21656.2829451409. The cubic root of 468994591 is about 776.9432143029.

The spelling of 468994591 in words is "four hundred sixty-eight million, nine hundred ninety-four thousand, five hundred ninety-one".