994559513 has 4 divisors (see below), whose sum is σ = 1017688848. Its totient is φ = 971430180.

The previous prime is 994559507. The next prime is 994559539. The reversal of 994559513 is 315955499.

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 994559513 - 2²⁰ = 993510937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994559213) 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, 11564603 + ... + 11564688.

It is an arithmetic number, because the mean of its divisors is an integer number (254422212).

Almost surely, 2^994559513 is an apocalyptic number.

It is an amenable number.

994559513 is a deficient number, since it is larger than the sum of its proper divisors (23129335).

994559513 is a wasteful number, since it uses less digits than its factorization.

994559513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23129334.

The product of its digits is 1093500, while the sum is 50.

The square root of 994559513 is about 31536.6376299060. The cubic root of 994559513 is about 998.1832055903.

The spelling of 994559513 in words is "nine hundred ninety-four million, five hundred fifty-nine thousand, five hundred thirteen".