5603994921 has 8 divisors (see below), whose sum is σ = 8539420864. Its totient is φ = 3202282800.

The previous prime is 5603994917. The next prime is 5603994943. The reversal of 5603994921 is 1294993065.

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

It is not a de Polignac number, because 5603994921 - 2² = 5603994917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5603994821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133428430 + ... + 133428471.

It is an arithmetic number, because the mean of its divisors is an integer number (1067427608).

Almost surely, 2^5603994921 is an apocalyptic number.

It is an amenable number.

5603994921 is a deficient number, since it is larger than the sum of its proper divisors (2935425943).

5603994921 is a wasteful number, since it uses less digits than its factorization.

5603994921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266856911.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 5603994921 is about 74859.8351654611. The cubic root of 5603994921 is about 1776.2301776757.

The spelling of 5603994921 in words is "five billion, six hundred three million, nine hundred ninety-four thousand, nine hundred twenty-one".