461305993 has 4 divisors (see below), whose sum is σ = 461496960. Its totient is φ = 461115028.

The previous prime is 461305981. The next prime is 461306003. The reversal of 461305993 is 399503164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461305993 - 2¹³ = 461297801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461305903) 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, 91813 + ... + 96706.

It is an arithmetic number, because the mean of its divisors is an integer number (115374240).

Almost surely, 2^461305993 is an apocalyptic number.

It is an amenable number.

461305993 is a deficient number, since it is larger than the sum of its proper divisors (190967).

461305993 is a wasteful number, since it uses less digits than its factorization.

461305993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190966.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 461305993 is about 21478.0351289404. The cubic root of 461305993 is about 772.6741188909.

The spelling of 461305993 in words is "four hundred sixty-one million, three hundred five thousand, nine hundred ninety-three".