407893993 has 8 divisors (see below), whose sum is σ = 441903168. Its totient is φ = 374260944.

The previous prime is 407893991. The next prime is 407893999. The reversal of 407893993 is 399398704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 407893993 - 2¹ = 407893991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 407893993.

It is not an unprimeable number, because it can be changed into a prime (407893991) 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 7 ways as a sum of consecutive naturals, for example, 91771 + ... + 96112.

It is an arithmetic number, because the mean of its divisors is an integer number (55237896).

Almost surely, 2^407893993 is an apocalyptic number.

It is an amenable number.

407893993 is a deficient number, since it is larger than the sum of its proper divisors (34009175).

407893993 is a wasteful number, since it uses less digits than its factorization.

407893993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188063.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 407893993 is about 20196.3856419905. The cubic root of 407893993 is about 741.6217130744.

The spelling of 407893993 in words is "four hundred seven million, eight hundred ninety-three thousand, nine hundred ninety-three".