5921660899 has 16 divisors (see below), whose sum is σ = 7387243776. Its totient is φ = 4611535200.

The previous prime is 5921660869. The next prime is 5921660911. The reversal of 5921660899 is 9980661295.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5921660899 - 2⁵ = 5921660867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5921660809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112509 + ... + 156529.

It is an arithmetic number, because the mean of its divisors is an integer number (461702736).

Almost surely, 2^5921660899 is an apocalyptic number.

5921660899 is a deficient number, since it is larger than the sum of its proper divisors (1465582877).

5921660899 is a wasteful number, since it uses less digits than its factorization.

5921660899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45786.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 5921660899 is about 76952.3287431901. The cubic root of 5921660899 is about 1809.1775002930.

The spelling of 5921660899 in words is "five billion, nine hundred twenty-one million, six hundred sixty thousand, eight hundred ninety-nine".