4045409991 has 48 divisors (see below), whose sum is σ = 6869990400. Its totient is φ = 2245973184.

The previous prime is 4045409983. The next prime is 4045410001. The reversal of 4045409991 is 1999045404.

It is not a de Polignac number, because 4045409991 - 2³ = 4045409983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045409971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 406665 + ... + 416493.

It is an arithmetic number, because the mean of its divisors is an integer number (143124800).

Almost surely, 2^4045409991 is an apocalyptic number.

4045409991 is a deficient number, since it is larger than the sum of its proper divisors (2824580409).

4045409991 is a wasteful number, since it uses less digits than its factorization.

4045409991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028 (or 10025 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 4045409991 is about 63603.5375667109. The cubic root of 4045409991 is about 1593.3854517721.

The spelling of 4045409991 in words is "four billion, forty-five million, four hundred nine thousand, nine hundred ninety-one".