994920591 has 32 divisors (see below), whose sum is σ = 1596072960. Its totient is φ = 538965504.

The previous prime is 994920517. The next prime is 994920593. The reversal of 994920591 is 195029499.

It is not a de Polignac number, because 994920591 - 2⁷ = 994920463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994920591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994920593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45465 + ... + 63693.

It is an arithmetic number, because the mean of its divisors is an integer number (49877280).

Almost surely, 2^994920591 is an apocalyptic number.

994920591 is a deficient number, since it is larger than the sum of its proper divisors (601152369).

994920591 is a wasteful number, since it uses less digits than its factorization.

994920591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18375.

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 994920591 is about 31542.3618487900. The cubic root of 994920591 is about 998.3039888390.

The spelling of 994920591 in words is "nine hundred ninety-four million, nine hundred twenty thousand, five hundred ninety-one".