472042993 has 4 divisors (see below), whose sum is σ = 476716788. Its totient is φ = 467369200.

The previous prime is 472042937. The next prime is 472043017. The reversal of 472042993 is 399240274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 246081969 + 225961024 = 15687^2 + 15032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472042993 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472042903) 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, 2336746 + ... + 2336947.

It is an arithmetic number, because the mean of its divisors is an integer number (119179197).

Almost surely, 2^472042993 is an apocalyptic number.

It is an amenable number.

472042993 is a deficient number, since it is larger than the sum of its proper divisors (4673795).

472042993 is a wasteful number, since it uses less digits than its factorization.

472042993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673794.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 472042993 is about 21726.5504164835. The cubic root of 472042993 is about 778.6229225127.

The spelling of 472042993 in words is "four hundred seventy-two million, forty-two thousand, nine hundred ninety-three".