44478971990 has 8 divisors (see below), whose sum is σ = 80062149600. Its totient is φ = 17791588792.

The previous prime is 44478971959. The next prime is 44478971993. The reversal of 44478971990 is 9917987444.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44478971993) 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, 2223948590 + ... + 2223948609.

It is an arithmetic number, because the mean of its divisors is an integer number (10007768700).

Almost surely, 2^44478971990 is an apocalyptic number.

44478971990 is a deficient number, since it is larger than the sum of its proper divisors (35583177610).

44478971990 is a wasteful number, since it uses less digits than its factorization.

44478971990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447897206.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 44478971990 in words is "forty-four billion, four hundred seventy-eight million, nine hundred seventy-one thousand, nine hundred ninety".