44278993 has 8 divisors (see below), whose sum is σ = 48373056. Its totient is φ = 40196400.

The previous prime is 44278967. The next prime is 44279017. The reversal of 44278993 is 39987244.

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 not a de Polignac number, because 44278993 - 2¹⁷ = 44147921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44278963) 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, 6580 + ... + 11482.

It is an arithmetic number, because the mean of its divisors is an integer number (6046632).

Almost surely, 2^44278993 is an apocalyptic number.

It is an amenable number.

44278993 is a deficient number, since it is larger than the sum of its proper divisors (4094063).

44278993 is a wasteful number, since it uses less digits than its factorization.

44278993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its digits is 435456, while the sum is 46.

The square root of 44278993 is about 6654.2462383053. The cubic root of 44278993 is about 353.7794305156.

The spelling of 44278993 in words is "forty-four million, two hundred seventy-eight thousand, nine hundred ninety-three".