40089248921 has 8 divisors (see below), whose sum is σ = 43350577920. Its totient is φ = 36928268608.

The previous prime is 40089248893. The next prime is 40089248923. The reversal of 40089248921 is 12984298004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40089248921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40089248923) 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, 25086341 + ... + 25087938.

It is an arithmetic number, because the mean of its divisors is an integer number (5418822240).

Almost surely, 2^40089248921 is an apocalyptic number.

It is an amenable number.

40089248921 is a deficient number, since it is larger than the sum of its proper divisors (3261328999).

40089248921 is a wasteful number, since it uses less digits than its factorization.

40089248921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50174343.

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 40089248921 in words is "forty billion, eighty-nine million, two hundred forty-eight thousand, nine hundred twenty-one".