993402461 has 4 divisors (see below), whose sum is σ = 994084800. Its totient is φ = 992720124.

The previous prime is 993402437. The next prime is 993402521. The reversal of 993402461 is 164204399.

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 a de Polignac number, because none of the positive numbers 2^k-993402461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993402401) 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, 338981 + ... + 341898.

It is an arithmetic number, because the mean of its divisors is an integer number (248521200).

Almost surely, 2^993402461 is an apocalyptic number.

It is an amenable number.

993402461 is a deficient number, since it is larger than the sum of its proper divisors (682339).

993402461 is a wasteful number, since it uses less digits than its factorization.

993402461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682338.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 993402461 is about 31518.2877231616. The cubic root of 993402461 is about 997.7959661370.

The spelling of 993402461 in words is "nine hundred ninety-three million, four hundred two thousand, four hundred sixty-one".