44102921 has 4 divisors (see below), whose sum is σ = 45178644. Its totient is φ = 43027200.

The previous prime is 44102917. The next prime is 44102923. The reversal of 44102921 is 12920144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16687225 + 27415696 = 4085^2 + 5236^2 .

It is a cyclic number.

It is not a de Polignac number, because 44102921 - 2² = 44102917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44102923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537800 + ... + 537881.

It is an arithmetic number, because the mean of its divisors is an integer number (11294661).

Almost surely, 2^44102921 is an apocalyptic number.

44102921 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44102921 is a deficient number, since it is larger than the sum of its proper divisors (1075723).

44102921 is a wasteful number, since it uses less digits than its factorization.

44102921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075722.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 44102921 is about 6641.0030115940. The cubic root of 44102921 is about 353.3098820518.

The spelling of 44102921 in words is "forty-four million, one hundred two thousand, nine hundred twenty-one".