44878121 has 4 divisors (see below), whose sum is σ = 45724932. Its totient is φ = 44031312.

The previous prime is 44878073. The next prime is 44878139. The reversal of 44878121 is 12187844.

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 36240400 + 8637721 = 6020^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 44878121 - 2¹⁰ = 44877097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44878321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423326 + ... + 423431.

It is an arithmetic number, because the mean of its divisors is an integer number (11431233).

Almost surely, 2^44878121 is an apocalyptic number.

It is an amenable number.

44878121 is a deficient number, since it is larger than the sum of its proper divisors (846811).

44878121 is an equidigital number, since it uses as much as digits as its factorization.

44878121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846810.

The product of its digits is 14336, while the sum is 35.

The square root of 44878121 is about 6699.1134488080. The cubic root of 44878121 is about 355.3679211412.

The spelling of 44878121 in words is "forty-four million, eight hundred seventy-eight thousand, one hundred twenty-one".